Wireless Communication Device Protection in Electric Power Tools
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Solution Overview
Problem
Electric power tools face issues with wireless communication devices being damaged by vibrations and foreign materials accumulating on antenna units, leading to potential radio wave attenuation and data transmission disruptions.
Innovation Solution
The wireless communication device is covered with a shock-absorbing material, and the antenna unit is positioned higher than the trigger switch when the tool is stored, preventing collisions and foreign material accumulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the wireless communication device is arranged inside the housing, then the device is protected from external damage, but the device may collide with surrounding structures due to vibration and be broken
Solution Approach 1:
The patent applies beforehand cushioning by providing a vibration isolation member that is arranged between the housing and the wireless communication device before vibration occurs. This vibration isolation member absorbs and reduces the vibration energy transmitted to the wireless communication device, preventing collision with surrounding structures and potential damage.
2Ease of operation
If the antenna unit is stored at the end of works, then the tool is ready for storage, but foreign materials such as iron particles accumulate on the antenna unit and attenuate radio waves
Solution Approach 1:
The patent applies another dimension by arranging the antenna unit at a higher position than the trigger switch in the vertical dimension. This spatial arrangement ensures that when the tool is stored in a tool folder with the output portion facing obliquely downwards, foreign materials accumulate at lower positions and cannot reach the antenna unit, preventing radio wave attenuation.
3Object-affected harmful factors
If the antenna unit is positioned higher than the trigger switch, then foreign materials are prevented from accumulating on the antenna unit, but the device complexity increases
Solution Approach 1:
The patent merges the antenna unit with the wireless communication device housing, integrating it into the existing structure. The antenna unit is arranged to extend from the housing in a direction toward the output portion, utilizing the existing spatial framework of the power tool. This integration minimizes additional complexity while achieving the protective positioning.
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
This configuration effectively protects the wireless communication device from vibration-induced damage and prevents foreign material accumulation, ensuring reliable data transmission by maintaining antenna cleanliness.
Implementation Method 1
the wireless communication device is covered with a shock-absorbing material, the antenna unit being arranged to lie higher than the trigger switch when the electric power tool is stored in a specified storage state
Data Source
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AI summary
An electric power tool includes a housing, a motor arranged within the housing (10), a power transmission unit (17) arranged within the housing for transferring rotation of the motor to a work tool (14), a motor control unit (20) arranged within the housing for controlling the rotation of the motor, and a trigger switch (18) retractably provided to the housing for instructing the motor control unit to control the rotation of the motor. The electric power tool further includes a wireless communication device (24) arranged within the housing for wirelessly communicating the work information on the content of works. The wireless communication device includes an antenna unit (30a). The wireless communication device is covered with a shock-absorbing material. The antenna unit is arranged to lie higher than the trigger switch when the electric power tool is stored in a specified storage state.