Sliding Door Wheel Holder With Composite Wheels
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Solution Overview
Problem
Sliding door systems face issues with wear and frequent replacement of wheels due to high usage and varying door weights, leading to noise, inaccurate height adjustment, and complex, time-consuming wheel exchange processes.
Innovation Solution
A wheel carriage with a second wheel holder that allows for a variable number of wheels, enabling easy addition or removal of wheels without modifying the carriage, using gravitation force for attachment, and facilitating flexible wheel arrangements to accommodate different door weights.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If metal wheels are used in sliding door systems, then durability and load-bearing capacity are improved, but noise generation increases
Solution Approach 1:
The invention combines metal and plastic materials in a composite wheel structure. The wheel consists of a metal core providing structural strength and durability, with a plastic outer layer that reduces noise and provides wear resistance. This merging of materials allows the wheel to simultaneously achieve the durability of metal wheels and the noise-reducing properties of plastic wheels.
2Object-generated harmful factors
If plastic wheels are used in sliding door systems, then noise is reduced and cost is decreased, but wheel lifespan decreases and replacement complexity increases
Solution Approach 1:
The composite wheel structure merges the advantages of both metal and plastic materials. The plastic outer layer provides noise reduction and cost benefits, while the metal core ensures sufficient load-bearing capacity and durability. This combination allows plastic wheels to achieve extended lifespan comparable to metal wheels while maintaining noise reduction and cost advantages.
3Force
If the number of wheels in a wheel carriage is increased to handle heavier doors, then load-bearing capacity is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The invention changes the material parameters of the wheels from solid metal or solid plastic to a composite structure with a metal core and plastic outer layer. This parameter change increases the strength-to-weight ratio of individual wheels, allowing the wheel carriage to handle heavier doors without increasing the number of wheels, thus avoiding increased device complexity and manufacturing cost.
4Loss of time
If wheels are designed for easy replacement, then maintenance time is reduced, but structural simplicity may compromise durability
Solution Approach 1:
The composite wheel is segmented into two main parts: a metal core and a plastic outer layer. The plastic outer layer can be designed as a removable component that can be easily detached and replaced without affecting the metal core structure. This segmentation allows for quick wheel replacement while maintaining the durability benefits of the metal core, as the core remains intact and reusable.
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 solution reduces wear on wheels, allows for flexible wheel configurations, enables the use of plastic wheels in heavy doors, simplifies wheel exchange, and stabilizes the door carriage, reducing maintenance costs and complexity.
Implementation Method 1
using gravitation force for attachment
Data Source
Figure 1
Figure 2a~2b
Figure 3a~3b
AI summary
The present invention relates to the field of sliding door systems. The invention relates to a second wheel holder (800) enabling using a flexible number of wheels in a wheel carriage (300) for a sliding door resting in sliding track (106). The second wheel holder (800) comprises one attachment means (810) adapted to be removably attached to the first wheel connection means (340) and at least two second wheel connection means (820) each adapted to connect one wheel (330). The invention also relates to a method for exchanging the wheels (330) and of a wheel carriage (300), by lowering a door panel and replacing the wheels, by removing the second wheel holder (800), while the wheel carriage (300) is resting in the sliding track (106).