Adjustable Pulley Device for Sliding Doors
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Solution Overview
Problem
Conventional pulley devices for sliding doors and windows have complex mounting and positioning structures, making them difficult to install and detach, and are costly, limiting their application range.
Innovation Solution
A pulley device with a simple connecting structure using a rocker and housing design, where the pulley component is adjustable within a receiving cavity, facilitated by a receiving groove and guiding groove system, allowing for smooth adjustment and mounting, reducing production costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional mounting and positioning structures are used to achieve adjustability of the pulley device, then the pulley device can be adjusted, but the structure becomes complicated, making it difficult to mount and detach, and increasing production cost
Solution Approach 1:
The mounting structure is divided into separate components: a mounting plate with positioning holes and a supporting plate with positioning protrusions. This segmentation allows for easy assembly and disassembly while maintaining adjustability, as the components can be independently positioned and connected without complex interlocking mechanisms.
Solution Approach 2:
The patent introduces a simple mounting plate as an intermediary component between the pulley device and the supporting structure. This intermediary element provides a standardized interface with positioning holes that align with positioning protrusions, enabling easy adjustment and mounting without requiring complex integrated structures.
2Adaptability or versatility
If conventional mounting structures are used to achieve adjustability, then the pulley device can be adjusted, but the production cost increases
Solution Approach 1:
By segmenting the mounting structure into simple, standardized components (mounting plate, supporting plate, connecting pieces), each part can be manufactured independently using simple processes, reducing overall production cost while maintaining adjustability functionality.
Solution Approach 2:
The mounting components are designed as simple, inexpensive elements that can be easily replaced or adjusted. The use of basic materials and simple geometries for the mounting plate and supporting plate reduces manufacturing costs compared to complex integrated mounting structures.
3Ease of manufacture
If a simple connecting structure is used, then the production cost is reduced and mounting is easier, but the adjustability and stability of the pulley device may be compromised
Solution Approach 1:
While the overall mounting structure is simple, the patent applies local quality enhancement through precise positioning features: positioning holes and positioning protrusions are strategically placed to ensure accurate alignment and stable connection. This localized precision ensures reliability without requiring complex structures throughout the entire mounting system.
Solution Approach 2:
The mounting plate and supporting plate are designed with pre-defined positioning holes and protrusions that ensure correct alignment before assembly. This preliminary design of positioning features guarantees stable mounting and proper adjustability without requiring complex alignment procedures during installation.
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
The pulley device features a simplified structure for easy mounting and adjustment, reducing production costs while ensuring stable and smooth operation of sliding doors and windows.
Implementation Method 1
the other end of the rocker is received in the receiving groove and is capable of sliding along the receiving groove
Data Source
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AI summary
The present application relates to a pulley device, a sliding door, and a sliding window. The pulley device includes: a pulley component including a pulley; a connecting component including a rocker, one end of the rocker being rotatably connected to the pulley component; and a housing including a bottom plate and two side plates. The two side plates are fixed to two opposed sides of the bottom plate, respectively, so that the bottom plate and the side plates jointly define a receiving cavity configured to receive the pulley component and the connecting component. A surface of the side plate facing the receiving cavity defines a receiving groove along a length direction of the side plate, and the other end of the rocker is received in the receiving groove and is capable of sliding along the receiving groove.