Cabinet Door Hinge Assembly With Cam Height Adjustment
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Solution Overview
Problem
Cabinet door manufacturing often results in height variations, leading to unattractive appearances and requiring time-consuming adjustments, which consumers cannot perform without specialized tools and shims.
Innovation Solution
A hinge assembly with a splined pin, rotatable height adjuster, and cam elements that allow vertical and angular adjustments of cabinet doors, enabling precise alignment without the need for shims or specialized tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If shims are used to adjust door height, then door alignment precision is improved, but device complexity and ease of operation deteriorate due to requiring special tools and door removal
Solution Approach 1:
The hinge assembly incorporates a height adjuster mechanism with a pin that can be rotated to dynamically change the door height position. The cam element translates rotational motion of the height adjuster into vertical displacement, allowing continuous adjustment rather than fixed shim positions. This dynamic mechanism eliminates the need for door removal and special tools while maintaining precise alignment capability.
Solution Approach 2:
The hinge assembly is designed to be self-adjusting through its internal cam and height adjuster mechanism. The consumer can directly operate the height adjuster by rotating it, which automatically triggers the cam to move the door to the desired position without requiring external shims or specialized tools. The system serves itself by converting simple rotational input into the required vertical adjustment output.
2Manufacturing precision
If shims are used to adjust door height, then door alignment precision is improved, but loss of time increases due to door removal and experimentation
Solution Approach 1:
The height adjuster mechanism is pre-configured within the hinge assembly with the cam element and splined pin already in place. The consumer only needs to rotate the height adjuster to the desired position, and the preliminary mechanical arrangements automatically execute the alignment action. This eliminates the time-consuming steps of door removal, shim selection, and repeated experimentation that characterize traditional methods.
Solution Approach 2:
The manual shim insertion process is replaced by a mechanical rotation-to-position conversion system. The cam element acts as a mechanical translator that converts the simple rotational action of the height adjuster into precise vertical door positioning. This mechanical substitution eliminates the need for time-consuming manual shim fitting and experimentation, achieving rapid and accurate door alignment.
3Adaptability or versatility
If multiple adjustment mechanisms are added to the hinge assembly, then adaptability of door positioning is improved, but device complexity increases
Solution Approach 1:
The height adjustment and door positioning functions are merged into a single integrated cam mechanism. The cam element simultaneously performs multiple tasks: it translates the rotational motion of the height adjuster, controls the vertical position of the door, and maintains rotational engagement through its splined portion. This merging of functions achieves high positioning adaptability without proportionally increasing overall device complexity.
Solution Approach 2:
The cam element is designed as a multi-functional component that handles height adjustment, position control, and rotational engagement within a single element. The splined portion of the pin and corresponding cam surface work together to provide universal functionality for both vertical adjustment and rotational movement. This multi-functionality reduces the need for separate adjustment mechanisms, thereby limiting the increase in device complexity while maintaining high adaptability.
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
Facilitates easy and precise adjustment of cabinet door heights and angles, improving appearance and reducing the need for service technicians by allowing consumers to align doors efficiently.
Implementation Method 1
a first cam element including a cam surface and an inner circumference through which the pin extends, the inner circumference corresponding to the splined portion of the pin for mating therewith at a single position, the first cam element being vertically adjustable along the splined portion of the pin through rotation of the rotatable portion of the height adjuster about the pin
Implementation Method 2
a pin defining an axis about which the door rotates, the pin being supported by the hinge plate and including a splined portion
Implementation Method 3
The first cam element may further include a knurled surface configured to mate with the planar knurled surface of the height adjuster to inhibit rotation of the rotatable portion of the height adjuster
Data Source
AI summary
A hinge assembly for mounting a door on a cabinet below an opening thereof is provided. The hinge assembly may include a pin defining an axis about which the door rotates, the pin being supported by a hinge plate and including a splined portion. Moreover, the hinge assembly may include a height adjuster including an inner circumference through which the pin extends and at least a portion that is rotatable about the pin. The hinge assembly additionally may include a first cam element including a cam surface and an inner circumference through which the pin extends, the inner circumference corresponding to the splined portion of the pin for mating therewith at a single position, the first cam element being vertically adjustable along the splined portion of the pin through rotation of the rotatable portion of the height adjuster about the pin.