Shredder Vibration Isolation via Multi-Directional Resilient Supports
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing shredders experience vibrations, noise, and rocking due to the transfer of forces from the shredder mechanism to the housing, especially when the bin is near capacity, which is undesirable for user experience.
Innovation Solution
A shredder design incorporating a plurality of resilient supporting structures between the shredder mechanism and housing, allowing movement in X, Y, and Z directions, with a motion limiter to limit relative movement, and convex support surfaces to absorb vibrations and maintain the mechanism in a centered position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If elastic pads are provided on the connection point between the shredder housing and the shredder mechanism to act as a buffer, then noise and vibrations are reduced, but the pads are not capable of effective absorption of movement in X, Y, or Z direction and rotation about X, Y, and Z axes
Solution Approach 1:
The support function is divided into multiple independent resilient supporting structures (multiple springs) positioned at different locations between the shredder mechanism and housing. Each spring independently absorbs vibrations and movements, collectively providing comprehensive damping in multiple directions and rotations, overcoming the limitation of single elastic pads.
Solution Approach 2:
The patent changes the physical parameters of the support structures by using multiple springs with specific elastic coefficients and positioning them at optimized locations. This allows the system to effectively absorb vibrations and movements in X, Y, Z directions and rotations about these axes, transforming the inadequate single-point buffering into multi-directional vibration isolation.
2Ease of operation
If the support structures are not fixedly connected to the support surfaces, then movement of the shredder mechanism in X, Y, and Z directions is allowed, but the mechanism may rock or shake during operation
Solution Approach 1:
The resilient supporting structures (springs) act as counterbalancing elements that provide restoring forces against gravitational and operational forces. The multiple springs distributed at different positions create counteracting moments that prevent rocking and shaking while allowing necessary movements in X, Y, and Z directions.
Solution Approach 2:
The springs are pre-positioned and pre-loaded to provide preliminary support and stabilization. This preliminary action ensures that the shredder mechanism maintains proper positioning and stability during operation, preventing excessive rocking and shaking before they occur.
3Stability of the object's composition
If a motion limiter is provided between the housing and the shredder mechanism, then the relative movement between the shredder mechanism and the housing is limited, but the complexity of the device increases
Solution Approach 1:
The resilient supporting structures (springs) perform multiple functions simultaneously: they provide vibration isolation, allow controlled movement in X, Y, and Z directions, and act as motion limiters by defining the maximum travel distance through their physical constraints. This multi-functionality reduces the need for separate motion limiting components, thereby minimizing device complexity.
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
Effectively reduces vibrations and noise transmission to the housing, enhancing user satisfaction by isolating the shredder mechanism and improving stability during operation.
Implementation Method 1
A plurality of resilient supporting structures (e.g., springs) are provided between the shredder mechanism and shredder housing. The support structures are not fixedly connected to the support surfaces, thus allowing movement of the shredder mechanism in X, Y, and Z directions.
Data Source
AI summary
A shredder comprises a shredder housing and a shredder mechanism received in the housing. The shredder mechanism includes a motor and cutter elements and enables at least one article to be shredded to be fed into the cutter elements. The motor is operable to drive the cutter elements in a shredding direction. The shredder also includes a plurality of supporting structures between the shredder mechanism and the shredder housing. The shredder housing has a plurality of support surfaces. Each of the plurality of supporting structures is engaged but not fixedly connected on a corresponding support surface, thus allowing movement of the shredder mechanism in X, Y, and Z directions. At least one motion limiter is provided to limit the relative movement between the mechanism and the housing. The shredder mechanism may be urged to a centered position. The supporting structures may reduce vibrations and noise during operation of the shredder.