Tool Switch Load Sensor Integral Sealing and Overload Protection
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Solution Overview
Problem
Existing load sensors in tools face damage due to excessive loads and struggle to maintain waterproof properties, as separate configurations of triggers and load sensors complicate sealing, leading to insufficient waterproof and dustproof performance.
Innovation Solution
A tool design that integrates a switch with a load sensor and a load adjusting mechanism, where the load sensor moves relative to the switch manipulation part based on the applied pressing force, using a coil spring to prevent excessive loads and secure a waterproof seal through an integral unit structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the trigger and load sensor are configured as separate units to prevent excessive load, then the load sensor is protected from damage, but the sealing structure becomes complicated and waterproof property deteriorates
Solution Approach 1:
The patent integrates the trigger and load sensor into a single integrated unit where the trigger directly contacts the load sensor. This merging eliminates the need for complex intermediate sealing structures while maintaining protection mechanisms through the integrated design, thereby resolving the contradiction between sensor protection and sealing simplicity
2Reliability
If a spring mechanism is used to limit load on the sensor, then excessive load is prevented, but the structure becomes more complex
Solution Approach 1:
The integrated trigger-load sensor unit utilizes the inherent elastic deformation characteristics of the trigger itself to limit the load on the load sensor. When excessive force is applied, the trigger deflects elastically, automatically preventing overload without requiring external spring mechanisms or additional limiting components, thus maintaining structural simplicity
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
Prevents damage to the load sensor even under excessive loads while ensuring a reliable waterproof and dustproof seal, simplifying the structure and reducing the risk of malfunction.
Implementation Method 1
when the switch manipulation part is further pressed along the pressing direction to apply the predetermined load to the switch manipulation part, the load adjusting mechanism is configured to move the load sensor along the pressing direction
Data Source
AI summary
A tool includes a switch. The switch is configured to cause an electric component to operate. The switch includes a switch manipulation part, a load sensor and a load adjusting mechanism. The switch manipulation part is configured to manipulate the switch. The load sensor is configured to detect a load corresponding to a pressing force according to a manipulation of the switch manipulation part. The load adjusting mechanism is configured to move the load sensor relative to the switch manipulation part along a direction where the switch manipulation part and the load sensor are separated from each other, according to a magnitude of the pressing force applied to the load sensor.