Cable-Pulley Lifting Device for Compact Drawer Height Adjustment
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Solution Overview
Problem
Traditional drawers and shelves with fixed heights cause inconvenience in picking and placing objects, leading to potential muscle damage and accessibility issues for children and adults alike. Existing lifting drawer solutions require large installation spaces, have complex structures, are costly, and are inconvenient to disassemble and assemble.
Innovation Solution
A lifting device with a support member and a lifting assembly that includes a swiveling wheel, a swiveling drive member, a mounting member, and a first-stage sliding rail. A flexible cable wraps around the swiveling wheel and pulleys, allowing for the automatic lifting and lowering of the support member, which is designed to occupy minimal space, have a simple structure, and be cost-effective with easy disassembly and assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a lifting drawer is implemented to enable picking and placing objects at comfortable heights, then accessibility and ergonomics are improved, but the device occupies large installation space and has complex structure
Solution Approach 1:
The lifting device is divided into independent modular components: a support member for the drawer, a separate lifting assembly with cable and pulley system, and a drive mechanism. This segmentation allows the lifting function to be added without redesigning the entire drawer structure, reducing overall system complexity while maintaining the lifting capability that improves accessibility.
2Ease of operation
If a lifting drawer is implemented to enable picking and placing objects at comfortable heights, then accessibility and ergonomics are improved, but the device occupies large installation space
Solution Approach 1:
The lifting assembly components are nested within the existing drawer structure. The cable and pulley system is integrated into the drawer sides and rear panel, with the drive mechanism mounted on the drawer front. This nesting approach allows the lifting function to be incorporated without significantly increasing the drawer's external dimensions or requiring additional installation space.
3Ease of operation
If a lifting drawer with complex structure is implemented, then lifting function is achieved, but preparation cost is high and disassembly and assembly are inconvenient
Solution Approach 1:
The lifting assembly uses a dynamic cable-pulley system rather than rigid mechanical linkages. The cable can be easily tensioned and adjusted, and the pulleys can rotate freely to accommodate drawer movement. This dynamic design simplifies assembly compared to precision-machined rigid connections, reduces manufacturing cost, and allows for easy adjustment during installation while maintaining smooth lifting operation.
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 lifting device facilitates easy picking and placing of objects without causing muscle damage and ensures that users of all ages can access objects on the support member. It achieves this with minimal space requirements, a straightforward design, significantly reduced preparation costs, and ease of disassembly and assembly.
Implementation Method 1
a flexible cable is provided to wrap around the swiveling wheel and moves with swivel of the swiveling wheel... the flexible cable is provided to wrap around the first fixed pulley... the first-stage sliding rail is adapted to slide upwards and downwards relative to the guide rail
Implementation Method 2
the swiveling drive member is connected to the swiveling wheel and is adapted to drive the swiveling wheel to swivel... the flexible cable sections of the flexible cable located on both sides of the swiveling wheel are connected to the first-stage sliding rail
Data Source
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AI summary
The present application relates to the technical field of lifting, and provides a lifting device and a storage cabinet. The lifting device comprises: a supporting member and a lifting assembly, which comprises a rotating wheel, a rotating driving member, a mounting member and a first-stage sliding rail, wherein a flexible cable is wound around the rotating wheel, is adapted to move along with rotation of the rotating wheel, and comprises flexible cable sections located on two sides of the rotating wheel; the rotating driving member is connected to the rotating wheel, and is adapted to drive the rotating wheel to rotate; the mounting member is provided with a guide rail, and a first fixed pulley is mounted on the mounting member; the first-stage sliding rail is adapted to lift and slide relative to the guide rail, and the first-stage sliding rail and the supporting member are fixed; and the flexible cable is wound around the first fixed pulley, and flexible cable sections of the flexible cable located on the two sides of the rotating wheel are connected to the first-stage sliding rail. By means of the lifting device in the embodiments of the present application, objects can be conveniently taken and placed by means of lifting of the supporting member, thereby preventing a user from bending down and causing a waist sprain, or preventing a user from not reaching objects on the supporting member. In addition, the lifting device is small in terms of occupied space, simple in terms of structure, low in cost and convenient to disassemble and assemble.