Vacuum cleaner
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Solution Overview
Problem
Existing handheld vacuum cleaners face challenges in assembling the main Printed Circuit Board (PCB) due to limited internal space, leading to complex structures and increased risk of short circuits during assembly.
Innovation Solution
A cleaner design featuring a main PCB with slits and a connector with slit insertion protrusions, allowing for improved coupling accuracy and eliminating the need for additional fixing units, while the PCB is divided into two parts for easier installation and reduced size, simplifying the assembly process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the airflow generator is disposed over the handle and the power supply is disposed under the handle, then the internal space of the handle is small, but the structure for installing the PCB becomes complicated and it becomes difficult to install the PCB
Solution Approach 1:
The PCB is divided into a main PCB and a sub-PCB, with the main PCB disposed in the handle and the sub-PCB disposed in the main body. This segmentation allows the PCB functions to be distributed across different spatial locations, reducing the complexity of installing a single large PCB in the constrained handle space while maintaining all necessary functionality.
2Productivity
If the main PCB is installed in the handle with limited space, then the assembly time increases, but the connection accuracy may be compromised
Solution Approach 1:
A guide protrusion is provided on the PCB assembly that fits into a corresponding guide groove on the handle. This preliminary positioning feature ensures accurate alignment and connection between the PCB assembly and the handle before final installation, thereby maintaining high connection accuracy while facilitating faster assembly.
3Reliability
If additional fixing units are used to secure the PCB, then the assembly process becomes more complex, but the risk of short circuit due to erroneous assembling is reduced
Solution Approach 1:
The connector is designed with an asymmetric structure where the guide protrusion and guide groove provide directional alignment. This asymmetric design ensures that the PCB assembly can only be installed in the correct orientation, preventing erroneous assembly and potential short circuits without requiring additional symmetric fixing units.
Data Source
AI summary
A vacuum cleaner of the present invention comprises: a main body having a suction motor for generating suction force; a main PCB capable of generating a control command for the suction motor; a handle part capable of accommodating the main body PCB; and a connector provided at the main body, and to which the main PCB is connected in a process of coupling the handle part to the main body. The main PCB includes a plurality of pads and a slit, and the connector includes: a plurality of connecting pins for making contact with the plurality of pads; and a slit insertion protrusion inserted into the slit.