Drawer Height Adjustment Mechanism With Tool-Free Screw Alignment
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Solution Overview
Problem
Existing devices for adjusting the height of a drawer require tools or excessive force, limiting convenience and adjustment range.
Innovation Solution
A device comprising a flexible base with a supporting seat and adjusting member, allowing for tool-free height adjustment of a drawer connected to a guide rail through a screw rod and connecting member, forming an inclined guiding surface for easy alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If an eccentric component is used to adjust the height of the drawer, then the height can be adjusted, but the adjustment range is very limited and requires tools or excessive force
Solution Approach 1:
The patent changes the adjustment mechanism from a limited-range eccentric component to a threaded adjusting member that can be rotated multiple times, allowing continuous height adjustment over a large range. The threaded structure converts rotational motion into linear displacement, enabling precise and extensive height modification without requiring excessive force or special tools.
Solution Approach 2:
The patent replaces the eccentric component mechanism with a screw-thread mechanism. Instead of using the eccentric principle where a rotating element changes the position of a connected component, this invention uses a threaded hole and adjusting member that can be rotated to move the supporting seat vertically along the guide rail, providing both ease of operation and extensive adjustment range.
2Adaptability or versatility
If a screw driver or eccentric member is used to operate the height adjustment, then the height can be adjusted, but it is not convenient for users
Solution Approach 1:
The adjusting member is designed with an exposed adjusting portion that can be directly operated by hand without requiring any external tools. The user can simply rotate the adjusting member to achieve height adjustment, making the device self-servicing and eliminating the need for screw drivers or other specialized tools.
Solution Approach 2:
The patent replaces the tool-dependent eccentric component operation with a hand-operable threaded adjusting member. The threading provides mechanical advantage, allowing users to achieve significant adjustment with minimal effort using only their fingers, thereby greatly improving operational convenience.
3Ease of operation
If the base is made flexible to form an inclined guiding surface, then alignment is easier, but the structural complexity increases
Solution Approach 1:
The base is designed with flexible properties that allow it to deform and form an inclined guiding surface when the second end is positioned higher than the first end. This dynamic characteristic enables the base to automatically provide alignment guidance during the height adjustment process, facilitating easy alignment without requiring complex mechanical alignment mechanisms.
Solution Approach 2:
The patent changes the base from a rigid structure to a flexible one that can alter its shape. This parameter change allows the base to form an inclined guiding surface that naturally guides the alignment between the drawer and guide rail during adjustment, simplifying the alignment operation while adding only minimal structural complexity through the use of flexible material or design.
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
Enables convenient, tool-free, and extensive height adjustment of a drawer relative to a guide rail, improving usability and alignment without the need for tools or excessive force.
Implementation Method 1
A screw rod extends through the upright hole of the supporting seat and is connected to the threaded hole of the adjusting member
Implementation Method 2
The base has flexibility so that the second end is deformed relative to the first end. When the second end is higher than the first end, an inclined guiding surface is formed between the first and second ends
Data Source
AI summary
A device for adjusting height of a drawer is disposed on the drawer and a rear portion of a guide rail. The device includes a base, a supporting seat, an adjusting member, a screw rod and a connecting member. A first end of the base is connected to the guide rail and the supporting seat is mounted on the second end of the base. The screw rod is connected to the adjusting member and extends through the supporting seat. The screw rod is also connected to the guide rail. The connecting member is connected to the drawer and has a pin. When the drawer is mounted on the guide rail, the pin is connected to the supporting seat. When the adjusting member is rotated, the supporting seat and the connecting member are movable, so that the height of the drawer relative to the guide rail can be adjusted.