Drawer Slide Rail Cam Adjustment for Precise Vertical Alignment
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Solution Overview
Problem
Existing drawer height adjusting mechanisms are either inconvenient to operate or result in unwanted forward or backward displacement of drawers during adjustment, limiting their precise positional adjustment relative to the slide rail.
Innovation Solution
A drawer slide rail assembly featuring a movable member with a cam and shaft mechanism, allowing for easy upward or downward displacement of the drawer relative to the rail, facilitated by a cam and shaft eccentrically connected to the adjusting member, which presses against the movable member, enabling precise adjustment without unwanted movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a drawer is connected to an adjusting element configured for pivotal connection to a rail, then the vertical position of the drawer can be adjusted, but forward or backward displacement of the drawer takes place
Solution Approach 1:
The patent introduces a cam as an intermediary element between the adjusting member and the movable member. The cam converts the rotational motion of the adjusting member into linear vertical displacement of the movable member, eliminating the unwanted forward or backward displacement that occurs with direct pivotal connection. This mediator transforms the adjustment mechanism to achieve precise vertical positioning without side effects.
2Ease of operation
If a drawer position is changed by directly moving an adjusting element, then the position can be altered, but the operation required is inconvenient
Solution Approach 1:
The patent employs a cam with a curved profile to transform rotational motion into linear motion. The curved surface of the cam allows the adjusting member to be rotated easily (improving ease of operation) while the cam's geometry ensures that this rotation produces controlled linear displacement of the movable member. The curvature enables smooth, convenient operation without requiring complex manual manipulation.
3Stability of the object's composition
If the width of the supporting member is equal to the width of the first hole, then stable connection is achieved, but the movable member cannot be displaced freely
Solution Approach 1:
The patent applies local quality by making the supporting member's width equal to the first hole's width only in the horizontal direction (providing stable connection), while the supporting member's height is made less than the first hole's height (providing vertical displacement freedom). This selective dimensional matching allows the movable member to be stable horizontally but free to move vertically when actuated by the cam mechanism.
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 easy and precise adjustment of the drawer's position relative to the slide rail, allowing for smooth operation and fine-tuning of the gap or angle between adjacent drawers, improving usability and installation efficiency.
Implementation Method 1
The adjusting member includes a cam and a shaft eccentrically connected to the cam. At least a portion of the cam presses against the hole wall of the second hole of the movable member. When the adjusting member is rotated, the movable member is pushed by the cam and is thereby displaced upward or downward relative to the supporting member.
Implementation Method 2
The adjusting member includes a cam and a shaft eccentrically connected to the cam. The shaft passes through the second hole of the movable member and is connected to the second rail.
Data Source
AI summary
A drawer slide rail assembly includes movably connected first and second rails, a movable member, a supporting member, and an adjusting member. The movable member has a mounting hole corresponding to a mounting portion of the second rail and is linearly movably mounted to the second rail via the supporting member. The adjusting member includes a cam with an eccentric shaft. The cam at least partially presses against the movable member. The shaft extends through the movable member and is connected to the second rail. The second rail can be mounted to a drawer via a connector which also connects the movable member and the second rail. The drawer is adjustable in position relative to the second rail by the adjusting member.