Terminal Unit Electrical Coupling for Power Tool Components
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Solution Overview
Problem
Existing electric power tools, such as grinders with brushless motors, require significant labor for coupling signal and power lines due to direct attachment methods, making component replacement cumbersome and labor-intensive.
Innovation Solution
An electric power tool design featuring a terminal unit with signal and power supply terminals that are easily coupled to a component using a secure and flexible connection system, including a ring portion for sealing and elasticity to ensure reliable and efficient electrical contact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If direct attachment method is used for coupling signal line and power line, then electrical connection is achieved, but coupling requires significant labor and skills
Solution Approach 1:
A terminal unit is introduced as an intermediary component between the signal line/power line and the component. The terminal unit includes terminals that receive wires through insertion holes and make electrical contact with component terminals, serving as a mediator that simplifies the coupling process while ensuring reliable electrical connection.
Solution Approach 2:
The electrical connection system is segmented into separate functional components: the terminal unit with wire insertion holes for signal and power lines, and the component terminals. This segmentation allows independent assembly and simplifies manufacturing by enabling modular assembly rather than direct attachment.
2Reliability
If direct attachment method is used for coupling signal line and power line, then electrical connection is established, but component replacement becomes cumbersome
Solution Approach 1:
The system is divided into separable modules: the terminal unit that can be detached from the component. When replacement is needed, only the faulty component or terminal unit needs to be replaced individually, rather than replacing both together as would be required with direct attachment methods.
Solution Approach 2:
The connection between the terminal unit and component is made dynamic and reversible through the use of insertion holes and removable terminals, allowing the connection to be easily made and broken. This enables flexible maintenance and replacement operations without permanent attachment.
3Stability of the object's composition
If once coupled signal line and power line are difficult to separate, then connection stability is achieved, but replacement of individual components requires replacing both units
Solution Approach 1:
The connection system is segmented into independently replaceable units: the terminal unit and the component. This allows stable operation during use while enabling selective replacement of only the faulty component, reducing replacement complexity from replacing both units to replacing just one.
Solution Approach 2:
The connection parameters are designed to provide different characteristics in different operational phases: during normal operation, the connection maintains stability through proper terminal contact; during maintenance, the connection allows easy separation through the removable terminal design with insertion holes.
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 design facilitates easier coupling and replacement of electric components with reduced labor, enhancing operational efficiency and maintaining electrical conductivity while providing dust-proof and water-proof protection.
Implementation Method 1
the cover may be more flexible than the terminal base
Data Source
AI summary
An electric power tool includes a terminal unit and a component. A signal line and a power line are coupled to the terminal unit. The signal line transmits signal. The power line supplies electric power. The terminal unit is mounted to the component. The terminal unit includes a signal terminal coupled to the signal line, and a power supply terminal coupled to the power line. The component includes a component-side signal terminal and a component-side power supply terminal. The component-side signal terminal is electrically conductive to the signal terminal of the mounted terminal unit. The component-side power supply terminal is electrically conductive to the power supply terminal of the mounted terminal unit.