Rotatable Lever Connecting Element for Door Kinematics
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Solution Overview
Problem
Existing door leaf movement systems face structural limitations due to insufficient construction space for transmission elements when rotating between lever kinematics and guiding rails, requiring separate variants for DIN left-handed and right-handed doors, which can lead to connecting element breakage.
Innovation Solution
A device with a connecting element that can be positioned at two start positions on the lever, allowing for a larger range of rotation without breaking, and a rotatable support system that enables flexible mounting for both DIN left-handed and right-handed doors, using a sliding member with a functional reception to accommodate the transmission means.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the connecting element is fixed at one position on the lever, then the structure is simple, but the device cannot accommodate both DIN left-handed and right-handed door leaves without requiring separate variants
Solution Approach 1:
The connecting element is made rotatable relative to the lever, allowing it to dynamically change its position between a first start position for DIN left-handed door leaves and a second start position for DIN right-handed door leaves. This dynamic adjustment enables a single device design to accommodate multiple door configurations without requiring separate variants.
2Ease of operation
If the sliding member is rotated by 120° relative to the lever, then the transmission means can be properly positioned, but the connecting element would collide with the guiding rail and break due to insufficient construction space
Solution Approach 1:
The solution moves the problem from a two-dimensional planar rotation to a three-dimensional spatial arrangement by allowing the connecting element to rotate on an axis that is offset from the collision path with the guiding rail. This enables the necessary 120° rotation of the sliding member while the connecting element maintains clearance from the guiding rail through its rotational movement in a different dimensional plane.
3Reliability
If separate variants of lever kinematics are used for DIN left-handed and right-handed door leaves, then each variant is optimized for its specific application, but the overall system complexity increases and mounting time is extended
Solution Approach 1:
A single lever kinematics design is created that can serve multiple functions by allowing the connecting element to be positioned in different start positions. The same device can be used for both DIN left-handed and right-handed door leaves, eliminating the need to maintain separate variants and reducing mounting time through standardized installation procedures.
Data Source
AI summary
A device for moving a door leaf between an open position and a close position with regard to a door opening in a wall includes lever kinematics with a lever for assisting the movement of the door leaf. The lever includes a first section and a second section, and a connecting element for accommodating a transmission component configured for transmitting electrical energy and/or data. The device is provided for the connecting element to be rotatably supported at the first section of the lever.