Sander Working Head Interlock for Safe Baseplate Switching
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Solution Overview
Problem
Existing sanding machines require multiple tools for rough and fine grinding, leading to complex and unsafe operations due to the need for tool replacement and potential accidental motor activation during disassembly.
Innovation Solution
A sanding machine with an interlocking mechanism that prevents the motor from starting unless the working head is properly installed and prevents disassembly during operation, using a trigger mechanism and interlocking members to ensure safety and simplify the installation and disassembly process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a replaceable working baseplate is used to provide multiple sanding functions, then the versatility of the sanding machine is improved, but the device complexity increases due to the need for fasteners and lock mechanisms
Solution Approach 1:
The patent combines the working baseplate and drive component into a single integrated assembly that cannot be separated during operation. The drive component is permanently attached to the motor output shaft, eliminating the need for separate fasteners, lock mechanisms, and release components while maintaining the ability to provide multiple sanding functions through different baseplate configurations
2Ease of operation
If the working baseplate is completely separated from the main body during replacement, then the ease of operation is improved, but the risk of losing the third member (fastener/lock) increases
Solution Approach 1:
By integrating the drive component with the motor output shaft, the patent eliminates the third member (fastener/lock) entirely. The working baseplate connects directly to the drive component without requiring separate fastening elements, thus preventing component loss while maintaining ease of operation
3Ease of operation
If the motor can be started during the baseplate replacement process, then the ease of operation is improved, but the safety risk of accidental motor activation increases
Solution Approach 1:
The patent applies preliminary anti-action by designing the integrated drive component and motor assembly such that the motor cannot be activated unless the working baseplate is properly installed. The mechanical integration ensures that the baseplate installation itself prevents motor activation, and only when correctly positioned can the motor be started, thereby eliminating accidental activation risks
4Manufacturing precision
If multiple tools are used for rough and fine grinding, then the manufacturing precision is improved, but the productivity decreases due to tool replacement time
Solution Approach 1:
The patent implements multi-functionality by designing a single sanding machine with an integrated drive component that can accommodate different working baseplates for both rough and fine grinding operations. This universal design allows the machine to perform multiple sanding functions without requiring separate tools, thereby maintaining manufacturing precision while improving productivity by eliminating tool replacement time
Data Source
AI summary
The present invention relates to a sander, and a method for disassembling or installing a working head of the sander. The sander includes: a main body, including a housing, a motor disposed in the housing, a switch mechanism for controlling the motor includes a switch, and a drive component driven by the motor to rotate; and a working head adapted to the drive component. The main body further includes an interlocking mechanism, the interlocking mechanism includes an operation member movably disposed relative to the housing, the operation member is operably shifted between a first state and a second state, when the operation member is in the first state, the interlocking mechanism allows the switch to be triggered, when the switch is in a triggered state, the operation member is prevented from being shifted from the first state to the second state; and when the operation member is in the second state, the interlocking mechanism prevents the switch from being triggered. The sanding machine of the present invention has high security and can be operated conveniently.