Double-Leaf Revolving Door Closing Sequence Control
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Solution Overview
Problem
Existing devices for controlling the closing sequence of double-leaf swing doors with slide rail closers face challenges in ensuring correct closure order, particularly when the sliding block movement reverses during the closing movement, leading to inefficient locking and releasing mechanisms that are dependent on the position and movement of the sliding blocks.
Innovation Solution
A device utilizing a gear connection between longitudinal and transverse transmission parts within the slide rail, allowing movement in directional components normal to the longitudinal direction, which is independent of the sliding block's position and movement, ensuring the active leaf's closing movement is controlled based on the angular position of the sliding block relative to the slide rail.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the sliding block movement is used to control the closing sequence, then the closing sequence can be controlled, but the control becomes inefficient and complex when the sliding block movement reverses during closing
Solution Approach 1:
The patent introduces a transverse transmission part as an intermediary between the longitudinal transmission part and the sliding block. This transverse transmission part converts the longitudinal movement into transverse movement, mediating the control signal transmission independently of the sliding block's position reversals. The intermediary component ensures reliable control while isolating the complexity of handling reversed movements.
Solution Approach 2:
The transmission mechanism is segmented into distinct functional parts: a longitudinal transmission part for signal generation, a transverse transmission part for signal conversion, and the sliding block for execution. This segmentation allows each component to perform its specific function independently, simplifying the overall control system and making it more reliable despite the reversals in sliding block movement.
2Reliability
If the lock is released at a large opening angle of the fixed leaf, then the sliding block movement reversal is accommodated, but the waiting position angle becomes disturbingly large
Solution Approach 1:
The patent changes the dimension of movement transmission by introducing transverse movement. Instead of relying solely on longitudinal movement along the slide rail, the transverse transmission part converts longitudinal displacement into transverse displacement. This dimensional change allows the lock to be released at a smaller opening angle of the fixed leaf, reducing the waiting position angle and the time loss associated with it.
3Ease of operation
If the sliding block position in the slide rail is used for control, then the closing sequence can be controlled, but the control becomes dependent on sliding block position changes
Solution Approach 1:
The patent implements a dynamic transmission mechanism where the transverse transmission part can adapt its position and movement based on the sliding block's position. The transverse transmission part is movable along the slide rail and can adjust its longitudinal position dynamically. This dynamic capability allows the control system to remain effective across various door widths without being constrained by fixed geometric relationships.
Data Source
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AI summary
The invention relates to a device for controlling the closing sequence of double-leaf swing doors by means of slide rail door closers with a pivot arm (2, 12, 22, 33, 36), wherein a longitudinal transmission part (7, 17) mounted for longitudinal movement in the slide rail (1) is part of a gear connection between the fixed-leaf and active-leaf device parts. Movement of a slide-block-side transmission part (4, 11, 24) movably guided on a slide block (3, 13, 23) is transmitted to the longitudinal transmission part (7, 17) via a transverse transmission part (6, 9, 19, 26), which bears against the slide-block-side transmission part (4, 11, 24) with a contact surface aligned parallel to the longitudinal direction of the slide rail (1). The sliding block-side transmission part (4, 11, 24) is in gearbox connection with the swivel arm (2, 12, 22, 33, 36).