Cleaning head and hand-held vacuum cleaner
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Solution Overview
Problem
Existing hand-held vacuum cleaners face issues such as easy damage of the connection between the cleaning head and suction pipe, inefficient dust and debris cleaning, improper layout leading to low vacuuming efficiency, cumbersome dust cup and HEPA separation, difficult battery pack disassembly, accidental touch activation, low dust-air separation efficiency, and laborious operation due to improper layout.
Innovation Solution
A hand-held vacuum cleaner with a durable connection mechanism between the cleaning head and suction pipe, efficient bristle assemblies, improved dust-air separation mechanism, quick disassembly of the battery pack, and a rational layout that prevents accidental activation and enhances dust-air separation efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a similar bolt structure is used to connect a cleaning head to a suction pipe, then the connection is simple to manufacture, but it is easy to damage and has a short service life
Solution Approach 1:
The connection structure is divided into a cleaning head portion and a suction pipe portion with distinct connection features. The cleaning head has a connection groove while the suction pipe has a connection protrusion, creating segmented but interlocking components that are both manufacturable and durable
Solution Approach 2:
The connection protrusion of the suction pipe is inserted into the connection groove of the cleaning head, forming a nested connection structure. This nesting arrangement provides secure mechanical coupling that is resistant to damage while maintaining manufacturing simplicity
2Device complexity
If a bristle assembly on a roller is set individually with soft bristles, then the structure is simple, but it is not efficient at cleaning dust or debris, resulting in a decrease in cleaning efficiency
Solution Approach 1:
The bristle assembly incorporates bristles with different hardness levels at different locations. Hard bristles are positioned for robust debris removal while soft bristles handle delicate dust, creating localized quality variations that enhance overall cleaning efficiency without excessive complexity
Solution Approach 2:
The bristle assembly uses composite construction with bristles of varying material properties (different hardness levels) combined in a single assembly. This composite approach enables the roller to handle multiple types of contaminants effectively while maintaining a relatively simple overall structure
3Device complexity
If the layout of a working head used for vacuuming is improper, then the structure can be simple, but during the vacuuming process, a front end of the working head is easily lifted, resulting in low vacuuming efficiency
Solution Approach 1:
The working head layout positions components to create a balanced center of gravity. The roller and bristle assembly are positioned to counterbalance the front end weight, preventing lifting during operation and maintaining consistent vacuuming efficiency without complicating the overall structure
4Strength
If a dust cup and HEPA in a dust-air separation mechanism are connected to a main body portion by a mechanical structure, then the connection is secure, but when the user needs to take out the dust cup or the HEPA, the mechanical structure needs to be removed first, so that the dust cup or the HEPA can be separated from the main body portion, making the take-out steps cumbersome and the operation inconvenient
Solution Approach 1:
The dust cup and HEPA are segmented from the main body as separate removable components. Each can be independently removed by simply pulling them outward without requiring disassembly of the mechanical connection structure, maintaining secure operation during use while enabling convenient maintenance
Solution Approach 2:
The dust cup and HEPA are designed to be extractable components that can be removed directly from the main body portion without first removing the mechanical connection structure. This extraction design simplifies maintenance operations while the mechanical structure remains intact for secure operation
5Strength
If a battery pack that supplies power to the hand-held vacuum cleaner generally cannot be disassembled, or the disassembly of the battery pack is cumbersome and difficult, then the battery pack structure is secure, but it causes inconvenience to the replacement or charging of the battery pack
Solution Approach 1:
The battery pack connection structure transitions from a fixed rigid connection to a dynamic removable connection. The battery pack can be easily detached and reattached while maintaining secure connection during operation, combining structural integrity with operational flexibility for convenient replacement and charging
6Device complexity
If the screen sleeved on an outer periphery of a cyclone cone used to separate the dust and the air is used for preliminary separation of the dust and the air, then the structure is simple, but the existing screen is not efficient in separating the dust and the air, so that the outflowing air cannot meet the requirements
Solution Approach 1:
The screen is designed with optimized porous structure and material properties to enhance dust-air separation efficiency. The porous configuration allows effective particle capture while maintaining adequate airflow, achieving high separation performance without excessive structural 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
The solution provides a strong and durable connection, high cleaning efficiency, convenient operation, improved dust-air separation, and a comfortable, ergonomic design that reduces user burden and enhances safety and usability.
Implementation Method 1
a dust-air separation mechanism communicating with the suction pipe and configured to separate dirt and dust from the airflow; wherein the dust-air separation mechanism includes a cyclone separation assembly with cyclone cones
Implementation Method 2
a cyclone separation assembly with a cyclone cone, the cyclone cone has a plurality of cones, each of the cones has an inlet for allowing dust to flow into the cone and an outlet for the dust to flow out after the dust is separated
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A cleaning head (4), comprising: a cleaning head housing (41) in which a suction port (46) is defined, as well as a rotating mechanism (7) that is rotatingly connected to the cleaning head housing (41). The rotating mechanism (7) comprises a first rotating component (71) and a second rotating component (72) that is disposed between the cleaning head housing (41) and the first rotating component (71). The first rotating component (71) comprises a connecting member (711), which has a connecting function, and a rotating shaft (712), which is disposed at the end of the connecting member (711) close to the cleaning head housing (41). An accommodating cavity for accommodating the rotating shaft (712) is defined on inner wall of the second rotating component (72) so that the first rotating component (71) can rotate relative to the second rotating component (72) when the rotating shaft (712) is located in the accommodating cavity. The cleaning head (4) is connected to a suction tube (6) by means of the rotating mechanism (7). The structure of the rotating mechanism (7) is solid and firm and is not easily damaged, thereby prolonging the service life of a hand-held vacuum cleaner (100).