Door Operating Device with Segmented Wheel and Slider
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Solution Overview
Problem
Current operating devices for doors and windows with traditional leaf-type opening and key-type closing are limited by their structural design, which restricts their use in applications requiring different opening methods without modifications, leading to increased production and storage costs due to the need for multiple component models.
Innovation Solution
An operating device with a box-shaped body housing a wheel having a smooth and toothed circular surface, a shaft for a control grip, and a slidably inserted rod with an operating rack, featuring a slider that can be inserted to limit the wheel's rotation, allowing for either traditional or transom-type openings without structural modifications, and enabling selection of a single opening type for reduced component variability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the operating device uses a traditional partially toothed wheel-rack structure for leaf-type opening, then the device achieves reliable locking and opening control, but the operating stroke becomes too long to accommodate key-type closing devices with limited rotation space
Solution Approach 1:
The wheel is divided into two distinct circular stretches: a first circular stretch with smooth surface for key-type closing operation, and a second circular stretch with teeth for leaf-type opening operation. This segmentation allows each stretch to be optimized for its specific function, with the toothed portion providing reliable locking and the smooth portion enabling compact key-type closing within limited space.
Solution Approach 2:
The operating device incorporates a slider that can move radially relative to the wheel to selectively engage with different portions of the wheel's circumference. This dynamic mechanism allows the device to switch between operating modes (key-type closing vs. leaf-type opening) by positioning the slider to interfere with or allow rotation of specific wheel sections, thereby adapting the operating stroke to different application requirements.
2Ease of manufacture
If the operating device is designed with a fixed structure for traditional leaf-type opening, then manufacturing is simplified, but the device cannot be adapted to transom-type openings or other different opening methods without creating multiple component models
Solution Approach 1:
The operating device is designed with universal adaptability through a wheel that incorporates multiple functional stretches (smooth and toothed) and a slider mechanism that can be positioned to enable different opening types. A single device model can accommodate traditional leaf-type openings, transom-type openings, and key-type closing by simply adjusting the slider position, eliminating the need for multiple specialized component models and reducing manufacturing complexity.
3Adaptability or versatility
If the operating device allows full rotation of the wheel for various opening positions, then the device provides maximum versatility for different opening types, but the device complexity increases due to the need for multiple components and configurations
Solution Approach 1:
The slider mechanism provides a simple dynamic adjustment system that allows the device to achieve various opening positions without requiring multiple fixed components. By radially positioning the slider to interfere with or allow rotation of the wheel at different points, the system achieves versatility through a single adjustable component rather than multiple specialized components, thereby reducing overall device complexity.
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 solution allows a single operating device model to accommodate both traditional and transom-type openings, reducing production costs and maintaining high reliability by enabling flexible assembly options without altering the device's internal components.
Implementation Method 1
the rod having a relative surface equipped with an operating rack meshing with the second circular toothed stretch of the wheel in such a way as to allow, by rotating the wheel, a sliding of the rod
Implementation Method 2
the slider being positionable radially relative to the wheel and in such a way as to interfere with the rotation of the wheel, by abutment with a first tooth of one end of the second toothed circular stretch
Data Source
Figure 1~2
Figure 3~5
AI summary
Described is an operating device for doors and windows comprising a box-shaped body (2); a wheel (3) having a first circular stretch (3a) having a smooth surface and a second circular stretch (3b) which is toothed and housed in the box-shaped body (2); a rod (8) slidably inserted in the box-shaped body (2) and having the relative ends, outside the box-shaped body (2), configured to be connected, in use, to movable closing/opening devices of a leaf (1) located on the leaf (1); the rod (8) has a relative surface equipped with an operating rack (9) meshing with the second circular toothed stretch (3b) of the wheel (3) in such a way as to allow, by rotating the wheel (3), a sliding of the rod (8) which is able to obtain, in succession, and starting from a closed position of the leaf (1) to a fixed frame, a first position of opening of the leaf (1) from the fixed frame and a second, open position of the leaf (1) relative to the fixed frame different from the previous one; a slider (10) for selecting and locking the wheel (3) which can be inserted stably inside the box-shaped body (2) through a first through seat (11) made in the box-shaped body (2); the slider (10) is positionable radially relative to the wheel (3) and in such a way as to interfere with the rotation of the wheel (3), by abutment with a first tooth (12) of one end of the second toothed circular stretch (3b), and thus limit the rotation of the wheel (3) only between the closed position of the leaf (1) and a single open position of the leaf (1) and vice versa. [Figure 2]