Adjustable Frame Fixing Hook for Foam-Free Installation

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Solution Overview

Problem

Existing frame fastening systems for foam-free installation lack functional improvements and efficient handling, particularly in terms of adjustability and precise positioning during installation.

Innovation Solution

A frame fastening hook with an adjustable frame fastening device and elongated opening for receiving screw heads, allowing for transverse adjustment and precise positioning on the frame, along with removable limiting means for depth adjustment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If a frame fastening hook is used for foam-free installation, then the frame can be suspended on wall fastening screws, but the positioning precision and adjustability during installation are insufficient

Engineering Contradiction:
Improvepositioning precisionVSAvoidfastening device complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The frame fastening device incorporates adjustable components that allow dynamic repositioning during installation. The fastening position can be adjusted along the longitudinal axis of the hook body, enabling precise positioning while maintaining a relatively simple overall structure. This dynamic adjustability resolves the contradiction between positioning precision and device complexity.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The fastening device is segmented into modular components including the hook body, adjustable fastening mechanism, and limiting means. This segmentation allows each component to perform its specific function independently, achieving precise positioning control without requiring a overly complex integrated design.

Inventive Principle:
Principle #1Segmentation

2Adaptability or versatility

If the frame fastening hook has a fixed fastening position, then the structure is simple, but the adaptability to different installation positions is limited

Engineering Contradiction:
ImproveadjustabilityVSAvoidfastening device complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The fastening device transitions from a fixed position design to a dynamic adjustable design. The adjustable mechanism allows the fastening point to be repositioned along the hook body, providing adaptability to different installation requirements while keeping the structural complexity manageable through straightforward mechanical adjustment features.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The frame fastening hook is designed with multi-functional capabilities, serving both as a suspension element and an adjustable positioning device. The same hook body accommodates various fastening positions, making it universally applicable to different installation scenarios without requiring multiple specialized components.

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

3Ease of operation

If the elongated opening is made larger for easier screw insertion, then the ease of operation improves, but the lateral stability of the screw head decreases

Engineering Contradiction:
Improveease of screw insertionVSAvoidlateral stability
Core Design Contradiction:
Ease of operationVSStability of the object's composition

Solution Approach 1:

The elongated opening exhibits local quality variation along its length. The opening is wider at the insertion end to facilitate easy screw insertion, while the rear portion narrows to provide lateral stability and prevent excessive movement of the screw head. This localized dimensional variation simultaneously achieves ease of operation and structural stability.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The dimensions of the elongated opening are strategically varied along its longitudinal axis. The opening width parameter changes from larger at the insertion end to smaller at the rear, creating a gradient that balances ease of screw insertion with lateral stability retention.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentEP4435221B1Frame fixing hook, mounting set, frame and mounting method
Publication Date: 2025.06.18 HUGA KG
  • EP4435221B1 patent drawingFigure 1~2
  • EP4435221B1 patent drawingFigure 3~4
  • EP4435221B1 patent drawingFigure 5~9

AI summary

The invention relates to a frame mounting hook (10) that can be attached to the back of a frame in order to hang the frame on a wall-side mounting screw inserted into a door jamb during foam-free installation. Accordingly, the frame mounting hook (10) has a hooking area (12) for engaging the screw head of the wall mounting screw. The hooking area (12) has an elongated opening (14) for the slidably interlocking reception of the screw head of the wall mounting screw.To functionally improve the frame fixing hook, in particular to enable better positioning of the frame, it is proposed that the frame fixing hook (10) further comprise a frame fixing device (16) for attaching the frame fixing hook (10) to the frame, which is adjustable to set the position at which the frame fixing hook (10) is attached to the frame in a direction transverse to the extension of the elongated opening (14). In particular, an adjustable stop, such as a limiting element removable from an elongated hole (24), is provided.