Pivoting Clamping Device for Window Center Closer Assembly

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing center closers for windows and doors are difficult to assemble correctly, requiring experienced fitters to adjust pivoting clamping elements along the pivot axis to achieve the desired contact pressure, and are prone to installation issues due to non-uniform conditions and production-related tolerances.

Innovation Solution

The pivoting clamping device features step-like designed elements on both the fixed frame and sash sides, allowing for easy adjustment along the pivot axis, with support surfaces offset relative to each other, enabling simple setting of contact pressure during installation and accommodating variations due to material changes or tolerances.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the pivoting clamping elements are made adjustable along the pivot axis to accommodate installation variations and tolerances, then the adaptability and reliability of the center closer improve, but the device complexity and difficulty of assembly increase

Engineering Contradiction:

Improveadjustability of pivoting clamping elementsVSAvoidcomplexity of assembly

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The pivoting clamping elements are segmented into modular components with standardized connection points along the pivot axis. This segmentation allows independent adjustment of each element's position while maintaining the overall structural integrity, enabling adaptability without proportionally increasing overall device complexity

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The connection structure serves multiple functions: it provides both the structural linkage between clamping elements and the adjustment mechanism along the pivot axis. The same connection points used for structural attachment also serve as adjustment positions, eliminating the need for separate adjustment mechanisms and reducing device complexity

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Manufacturing precision

If the pivoting clamping elements require precise positioning along the pivot axis to achieve desired contact pressure, then the manufacturing precision and sealing quality improve, but the ease of operation and installation time increase

Engineering Contradiction:

Improvepositioning precision of pivoting clamping elementsVSAvoidease of adjustment

Core Design Contradiction:

Manufacturing precisionVSEase of operation

Solution Approach 1:

The pivoting clamping elements are pre-positioned at standardized connection points during manufacturing with predetermined spacing intervals. This preliminary positioning ensures that when installed, the elements are already at optimal positions for achieving the desired contact pressure, eliminating the need for complex on-site measurements and adjustments while maintaining high positioning precision

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system allows discrete changes in the position parameter of the pivoting clamping elements along the pivot axis by selecting different connection points. These parameter changes are made in standardized increments that correspond to predetermined spacing, enabling adjustment of contact pressure while simplifying the operation to a matter of selecting and connecting at appropriate positions

Inventive Principle:

Principle #35Parameter changes

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 design simplifies the assembly and adjustment of center closers, allowing for effective sealing and secure door/window operation by easily adjusting contact pressure without requiring extensive expertise, ensuring proper sealing and security against unauthorized opening.

Implementation Method 1

the sash-side pivoting clamping element can be pivoted with a clamping movement around the fixed frame-side pivoting clamping element when the fixed frame-side pivoting clamping element and the sash-side pivoting clamping element are installed due to a pivoting movement performed by the sash relative to the fixed frame about a pivot axis in a closing direction

Methodology Applied

Scientific EffectPivoting movement: Hinge

Implementation Method 2

the sash-side pivoting clamping element can be supported on the fixed frame-side pivoting clamping element in the transverse direction of the pivot axis during the clamping movement while building up a contact pressure exerted by the sash on the fixed frame perpendicular to a main plane of the fixed frame

Methodology Applied

Scientific EffectFriction: Friction

Data Source

PatentEP2570576B1Tensioning pivoting device, at the pivoting axis side, between a rigid frame and a leaf of a window, a door or the like

Publication Date: 2014.11.05 ROTO FRANK AG

Figure 1
Figure 2
Figure 3~4

AI summary

The swivel clamping device (7) has a pivot-tensioning element (8) connectable with a fixed frame (3) on the fixed frame side. A pivoting clamping element (9) is connectable with a wing (5) in the wing side. The wing side clamping element performs a pivotal movement, and is pivotable to the fixed frame-side pivot-tensioning element through a tensioning movement. The fixed frame-side pivot-tensioning element and the wing side clamping element are formed in a stepwise manner, and have respective supporting surfaces.