Bar Flap Furniture Fitting With 90° Positioning Arm
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Solution Overview
Problem
Existing furniture fittings are not suitable for use with downwardly openable bar flaps, as they require laborious recesses in the furniture part and do not allow integration of additional movement technology like dampers, limiting their functionality and usability.
Innovation Solution
A furniture fitting with a positioning arm that moves between two maximum positions, one of which is horizontal, allowing the bar flap to be in the same plane as the base panel, and incorporating a spring device, lever mechanism, and damping device for smooth operation, eliminating the need for recesses and enhancing user convenience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a hinge-like fitting is used for downwardly openable bar flaps, then the bar flap can be opened downward, but a laborious milled recess must be formed in the furniture part to accommodate the fitting
Solution Approach 1:
Instead of having the positioning arm recessed into the furniture part (traditional approach), the invention inverts the arrangement by having the positioning arm protrude from a housing that is mounted on the furniture carcass. This eliminates the need for recesses in the movable furniture part while achieving the same functional result of accommodating the positioning mechanism.
Solution Approach 2:
The invention introduces a housing as an intermediary component that houses the positioning arm and fastening interface. This housing acts as a mediator between the furniture carcass and the movable furniture part, allowing the positioning mechanism to be mounted on the stationary structure rather than requiring modifications to the movable part.
2Ease of manufacture
If the contact surface is arranged in the plane of the front side of the housing in the closed position, then no recesses are required in the furniture part, but the opening angle is limited to 90°
Solution Approach 1:
The invention employs a dynamic positioning arm mechanism that can change its orientation and position relative to the housing. The positioning arm is mounted to be movable relative to the housing, allowing it to transition between a retracted position (contact surface in plane of front side) and an extended position (contact surface in perpendicular plane), thereby achieving both manufacturing simplicity and adequate opening angle.
Solution Approach 2:
The invention utilizes spatial dimensionality by allowing the positioning arm to move in multiple directions and orientations. The contact surface can be positioned in different planes (parallel or perpendicular to the front side) depending on the position of the positioning arm, effectively using three-dimensional space to resolve the contradiction between manufacturing ease and functional requirement.
3Shape
If the contact surface is arranged perpendicular to the front side of the housing in the open position, then the bar flap can be in the same horizontal plane as the base panel, but the positioning arm must protrude from the housing
Solution Approach 1:
The invention divides the fitting system into distinct functional segments: the housing (mounted on furniture carcass), the positioning arm (movable component), and the fastening interface (contact surface). This segmentation allows each component to perform its specific function independently, with the positioning arm protruding from the housing to achieve horizontal plane alignment while the housing remains compact and integrated into the furniture structure.
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
Enables the use of furniture fittings with downwardly openable bar flaps without requiring recesses in the furniture part, providing a 90° maximum opening angle, ensuring articles remain stable and allowing for visually appealing design with minimal space usage.
Implementation Method 1
The furniture fitting has at least one spring device with which a force can be exerted on the at least one positioning arm
Implementation Method 2
The furniture fitting has at least one damping device with which a movement of the at least one positioning arm can be dampened
Data Source
AI summary
A furniture fitting is pivotable relative to a furniture carcass, and includes a housing to be arranged on or in a furniture panel of a furniture carcass, and a positioning arm mounted to be movable relative to the housing. The positioning arm is movable between a first maximum position, corresponding to a closed position of the movably mounted furniture part, and a second maximum position, corresponding to a maximum open position of the movably mounted furniture part. The housing has a front side and a fastening interface via which the movable furniture part is fastenable on the positioning arm. The fastening interface has a contact surface for contacting the movably mounted furniture part. The contact surface is arranged, in the first maximum position, in a plane of the front side of the housing and, in the second maximum position, in a plane perpendicular to the plane of the front side.