Axially Fixed Coupling Assembly for Compact Precast Connections

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Solution Overview

Problem

Existing connecting means for precast concrete parts are bulky due to the need for space to accommodate threaded devices, making them difficult to actuate and handle effectively.

Innovation Solution

A compact connecting means with connecting devices that are axially fixed to the coupling section, eliminating the need for space to accommodate axial displacement of the connecting devices, and allowing for easy actuation and handling.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If threaded devices are allowed to move axially during operation, then they can be screwed into tensioning sleeves for tensioning, but this requires significant space making the connecting means bulky

Engineering Contradiction:

Improveability to tension componentsVSAvoidspace required in tensioning sleeves

Core Design Contradiction:

Ease of manufactureVSVolume of moving object

Solution Approach 1:

Instead of allowing the connecting device to move axially within a tensioning sleeve during tensioning, the patent inverts the approach by fixing the connecting device axially and using rotational movement only. The tensioning is achieved by rotating the connecting device to engage threaded connections, while axial positioning is maintained through fixed coupling sections with transverse elongated holes that permit rotation but constrain axial displacement.

Inventive Principle:

Principle #13The other way round (Inversion)

2Strength

If threaded devices are screwed in deeply for proper tensioning, then connection strength is improved, but it becomes difficult to actuate the connecting means at the coupling device

Engineering Contradiction:

Improveconnection strengthVSAvoidease of actuation

Core Design Contradiction:

StrengthVSEase of operation

Solution Approach 1:

The patent separates the functions of axial positioning and rotational actuation. The coupling section with its transverse elongated hole constrains axial movement while permitting rotation, allowing the connecting device to be screwed in deeply for strong connection without compromising actuation accessibility. The actuation interface remains exposed and accessible at the coupling device end.

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

The connecting device is segmented into distinct functional zones: a coupling section with elongated holes for rotational actuation, a threaded section for deep engagement and tensioning, and a connecting device body that transmits forces. This segmentation allows each part to optimize its function without interfering with others.

Inventive Principle:

Principle #1Segmentation

3Ease of manufacture

If space is provided for axial displacement of connecting devices, then threaded devices can be screwed in, but the connecting means becomes bulky and difficult to handle

Engineering Contradiction:

Improveability to attach threaded devicesVSAvoidease of handling

Core Design Contradiction:

Ease of manufactureVSEase of operation

Solution Approach 1:

Rather than providing axial movement space for attaching and tensioning threaded devices, the patent inverts the mechanism by allowing only rotational movement through transverse elongated holes in the coupling sections. The connecting devices are attached by rotation around the axial direction, and tensioning is achieved by continued rotation that engages threaded connections, all while maintaining compact axial dimensions.

Inventive Principle:

Principle #13The other way round (Inversion)

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 compact design enhances the ease of handling and improves the connection and actuation of components, while maintaining the ability to transmit tensile forces effectively.

Implementation Method 1

a coupling device which couples the at least two connecting devices to one another at least in order to transmit tensile forces

Methodology Applied

Scientific EffectTensile force transmission: Tension

Data Source

PatentUS20250052299A1Connecting means, reinforcing device, connecting assembly and method of arranging components

Publication Date: 2025.02.13 B T INNOVATION GMBH

AI summary

A connecting means for connecting mutually spaced components, said connecting means comprising: at least two connecting devices by means of which the connecting means can be attached to one of the at least two components, respectively; and a coupling device which couples the at least two connecting devices to one another at least in order to transmit tensile forces. In order to improve the connection and handling of the components, at least one of the connecting devices is coupled to a coupling section of the coupling device so as to be fixed at least with respect to the axial direction.