Gear Motor Safety Mechanism with Adjustable Touch Switch
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Solution Overview
Problem
Conventional gear motors with safety mechanisms require multiple combinations of driven mechanisms and touch switches, leading to increased inventory complexity and bulkiness due to varying driving mechanisms, which results in higher costs and reduced safety from idling or wearing at terminal points.
Innovation Solution
A gear motor with a built-in safety mechanism featuring a touch switch positioned on the gear motor body, utilizing a worm and worm wheel speed reduction mechanism, a lead screw rod, and an adjustable nut, allowing for controlled linear movement and adjustable touch switch placement to prevent excessive rotations, thereby reducing the overall volume and enhancing safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If various combinations of driven mechanisms and touch switches are prepared to accommodate different driving mechanisms, then the adaptability to different standards is improved, but the device complexity and inventory management difficulty increase
Solution Approach 1:
The touch switch is integrated into the gear motor housing to create a universal safety mechanism that can be used across different driven mechanism standards. This eliminates the need for manufacturers to prepare various combinations of driven mechanisms and touch switches, as the integrated design works with all standards, thereby reducing inventory complexity while maintaining adaptability
2Length of moving object
If the travelling distance of the output rod is increased, then the stroke capability is improved, but the volume of the driven mechanism increases making the whole linear actuator bulky
Solution Approach 1:
The touch switch is merged with the gear motor housing to form an integrated safety mechanism. This combination eliminates the need for separate touch switch components that would otherwise need to be positioned along the output rod's travelling path, thereby maintaining the required stroke capability while reducing the overall volume of the driven mechanism
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 solution allows for reduced inventory complexity and cost by enabling various driven mechanisms to be used, while ensuring safety through controlled motor operation and preventing idling or wearing at terminal points, with the ability to easily inspect and adjust the touch switch position for fine tuning.
Implementation Method 1
a speed reduction mechanism comprising a worm extending from the motor body and a worm wheel positioned to correspond to the worm and drivingly engaged therewith
Implementation Method 2
a lead screw rod pivotally connected to the base and rotatably driven by the worm wheel, and a nut threadedly connected to the lead screw rod to generate a linear movement
Data Source
AI summary
A gear motor having a safety mechanism includes a motor body, a speed reduction mechanism, a transmission mechanism, and a touch switch. The speed reduction mechanism includes a worm and a worm wheel drivingly engaged with the worm. The transmission mechanism includes a base fixed to the speed reduction mechanism, a lead screw rod pivotally connected to the base and rotatably driven by the worm wheel, and a nut threadedly connected to the lead screw rod. The touch switch is electrically connected to the motor body and provided aside the lead screw rod, thereby stopping the motor body when the nut contacts the touch switch. Thus, the gear motor not only controls the operation of the driven mechanism, but also allows various driven mechanisms to be mounted thereon. The assembled volume of the gear motor and the driven mechanism is reduced.