Geared Drawer Assembly for Wobble-Free Appliance Sliding
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Solution Overview
Problem
Appliances with sliding drawers often experience wobble and binding issues during movement, leading to jamming or sticking in partially extended or retracted positions, which is undesirable for smooth operation.
Innovation Solution
A geared drawer assembly is introduced, featuring pinion and rack gears with offset gear teeth to synchronize the movement of the drawer sides, reducing wobble and binding by ensuring synchronized speed and alignment of the drawer's sides during extension and retraction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a traditional sliding drawer mechanism is used, then the drawer can move in and out of the compartment, but the drawer experiences lateral wobble and binding during movement
Solution Approach 1:
A gear rack is introduced as an intermediary element between the drawer and the cabinet floor. The gear rack engages with pinion gears mounted on the drawer, providing a mechanical connection that guides and stabilizes drawer movement while allowing controlled motion through the engagement of gear teeth.
Solution Approach 2:
The traditional direct sliding mechanism is replaced with a geared mechanical system. Instead of the drawer sliding directly on the cabinet floor, the drawer connects to a gear rack through pinion gears, transforming the simple sliding motion into a controlled geared mechanism that prevents wobble and binding.
2Device complexity
If the drawer uses a simple sliding mechanism, then the structure remains simple, but the drawer jams or sticks in partially extended or retracted positions
Solution Approach 1:
The gear rack serves as a mediating structure that provides continuous guidance and support throughout the drawer's travel path. The engagement between the pinion gear teeth and rack teeth ensures the drawer remains properly aligned and supported at all positions, preventing jamming or sticking in partially extended or retracted positions.
Solution Approach 2:
The mechanical parameters of the drawer system are changed by introducing gear teeth engagement. This transforms the movement from a simple sliding action to a controlled geared mechanism where the tooth engagement provides continuous positional control and prevents the drawer from binding or jamming at various positions.
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 geared drawer assembly effectively inhibits lateral wobble and binding, ensuring smooth and reliable operation of the drawer by synchronizing the movement of the drawer's sides, preventing jamming and maintaining consistent access to the compartment.
Implementation Method 1
A first pinion gear and a second pinion gear are pivotally mounted to the drawer and engaging the rack gear
Implementation Method 2
A geared assembly which engages an opposed rack so that the gear and rack inhibit wobble of the drawer
Implementation Method 3
Each of the first and second rack gears having a first row and a second row of gear teeth. The first row of gear teeth and the second row of gear teeth are offset in a longitudinal direction
Data Source
AI summary
An appliance is provided having a cabinet with at least one compartment for positioning of a drawer. The drawer may be moved into and out of the at least one compartment and the drawer comprises a food container. The drawer includes a geared assembly having a gear rack and pinion gear which inhibit wobble of the drawer when the drawer is pulled from the at least one compartment or is pushed into the at least one compartment.