Screwing Tool Torque Support with Adaptive Coupling

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Solution Overview

Problem

Applying torque to screw connections using a screwdriver can be uncomfortable, tiring, and potentially injurious, especially for multiple connections or high torques, necessitating improved and simplified operation of screwing tool torque supports.

Innovation Solution

A screwing tool torque support designed with a fastening area for attachment to a screwing tool and a support area for surrounding support, featuring a two-part construction with a support foot and arm connected via a coupling area allowing relative movement, enabling adaptation to ambient conditions and compensating for misalignments.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a hand-held screwdriver is used to apply torque to screw connections, then the fitter can directly operate the tool, but the reaction torque must be applied by the fitter which is uncomfortable and tiring

Engineering Contradiction:
Improveoperational comfortVSAvoidreaction torque on fitter
Core Design Contradiction:
Ease of operationVSForce

Solution Approach 1:

The torque support device is divided into separate functional components: a support foot for contacting the workpiece, a support arm for positioning, and a coupling mechanism for attachment to the screwdriver. This segmentation allows the reaction torque to be distributed to the workpiece through the support foot rather than being borne entirely by the fitter's hand.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The torque support device acts as an intermediary between the screwdriver and the workpiece. It provides a stable support structure that contacts the workpiece directly, thereby mediating the reaction torque and preventing it from being transmitted to the fitter's hand while maintaining control over the screwdriver's operation.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Ease of operation

If a screwdriver torque arm is used to support the housing, then the fitter does not have to apply reaction torque, but the device complexity increases

Engineering Contradiction:
Improveuser fatigue reductionVSAvoidtorque support structure
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The coupling area between the support foot and support arm provides at least one degree of freedom for relative movement, making the torque support device dynamic rather than rigid. This allows the device to adapt automatically to variations in workpiece geometry and positioning, simplifying operation while maintaining support functionality without requiring complex adjustment mechanisms.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The degree of freedom in the coupling area enables automatic adjustment of the relative position and orientation between the support foot and support arm. This parameter change capability allows the device to adapt to different work conditions without increasing structural complexity, as the adjustment occurs passively through the inherent mobility of the coupling mechanism.

Inventive Principle:
Principle #35Parameter changes

3Adaptability or versatility

If the support foot and support arm are connected rigidly, then the structure is stable, but adaptation to ambient conditions and compensation for misalignments is limited

Engineering Contradiction:
Improveadaptation to ambient conditionsVSAvoidstructural stability
Core Design Contradiction:
Adaptability or versatilityVSStability of the object's composition

Solution Approach 1:

The coupling area is designed with at least one degree of freedom that allows relative movement between the support foot and support arm. This dynamic connection maintains structural stability for torque support while enabling automatic adaptation to ambient conditions such as workpiece positioning variations and geometric tolerances.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The torque support device combines rigid components (support foot, support arm) with a flexible coupling mechanism. This composite structure integrates both stability and adaptability: the rigid parts provide structural integrity for torque transmission, while the coupling area with degrees of freedom provides adaptability to misalignments and ambient conditions.

Inventive Principle:
Principle #40Composite materials

Data Source

PatentEP4582219A1Screw tool torque support, set having a screw tool torque support, tool assembly and method for adapting a screw tool torque support
Publication Date: 2025.07.09 M-PT MATJESCHK-POWERTOOLS GMBH & CO KG
  • EP4582219A1 patent drawingFigure 1
  • EP4582219A1 patent drawingFigure 2
  • EP4582219A1 patent drawingFigure 3

AI summary

The invention relates to a screwing tool torque support (1). The screwing tool torque support (1) has a support foot (2) and a support arm (3) which are connected to one another via a coupling region (6). A coupling torque and/or a coupling force can be transmitted via the coupling region (6). At least one degree of freedom for relative movement is present between the support foot (2) and the support arm (3). Furthermore, the invention relates to a set comprising a screwing tool torque support (1), a tool assembly, and a method for adapting a screwing tool torque support (1).