Upright Vacuum Cleaner Support Structure for Steering Stability
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Solution Overview
Problem
Upright type vacuum cleaners suffer from deteriorated steering performance due to compressive loads applied by the main body on the suction nozzle, making it difficult to maneuver, especially on uneven surfaces.
Innovation Solution
A support structure is introduced that includes a pivotally rotatable main body coupled to the suction nozzle, with first and second leg assemblies that distribute the weight of the main body to three points, allowing for tilting and rotation to maintain stability and ease of movement, even on sloped or curved surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the main body is seated over the suction nozzle, then the structure is compact and simple, but the steering performance deteriorates due to compressive load
Solution Approach 1:
The support structure is divided into multiple leg assemblies (first leg assembly, second leg assembly, third leg assembly) that are pivotally connected to the main body at different locations. This segmentation distributes the compressive load from the main body across multiple pivot points rather than concentrating it on the suction nozzle, thereby improving steering performance while maintaining structural compactness
Solution Approach 2:
The leg assemblies are configured to extend in different spatial dimensions - the first leg assembly extends in a first direction, the second leg assembly extends in a second direction different from the first, and the third leg assembly extends in a third direction. This multi-dimensional arrangement distributes the main body weight across different spatial axes, reducing the compressive load on the suction nozzle and improving maneuverability
2Device complexity
If the main body weight is concentrated on the suction nozzle, then the structure is simple, but the stability deteriorates on uneven surfaces
Solution Approach 1:
The support function is segmented across three separate leg assemblies, each with its own pivotal connection to the main body. This distributes the stabilizing function across multiple independent support points, allowing each leg to independently adapt to surface variations while maintaining overall stability
Solution Approach 2:
The leg assemblies are designed with pivotal connections that allow dynamic adjustment of their angles relative to the main body. This enables the support structure to dynamically adapt to uneven surfaces by adjusting the configuration of each leg assembly, maintaining stability across varying terrain conditions
3Strength
If the leg assemblies are rigidly connected to the main body, then the structural strength is high, but the adaptability to sloped surfaces decreases
Solution Approach 1:
The leg assemblies are connected to the main body through pivotal connections rather than rigid fixed connections. This allows each leg assembly to dynamically adjust its angle and position in response to sloped surfaces and uneven terrain, providing adaptability while maintaining structural integrity through the pivotal joint design
Solution Approach 2:
The pivotal connections enable change in the geometric parameters (angles and positions) of the leg assemblies relative to the main body. This parameter variability allows the support structure to adapt to different surface conditions including slopes and uneven surfaces, while the structural strength is maintained through proper design of the pivotal joint components
Data Source
AI summary
An upright type vacuum cleaner is disclosed. The upright type vacuum cleaner may include a main body, a suction nozzle provided at a lower end of the main body, a first leg assembly configured to support a first side of the main body, and a second leg assembly configured to support a second side of the main body. The main body may further include a coupler configured to pivotally rotatably couple the first leg assembly and the second leg assembly to each other. The first leg assembly and the second leg assembly may be rotated by different angles to support the main body when the main body is tilted leftward or rightward. The first leg assembly and the second leg assembly may be rotated by a same angle to support the main body when the main body is tilted rearward.