Motor-Driven Rack Dispensing Tool with Clutch Transmission
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Solution Overview
Problem
Manually operated dispensing tools for caulk or adhesives are difficult to control and strenuous, leading to user fatigue and reduced usage duration due to the need for manual squeezing or grasping mechanisms.
Innovation Solution
A powered dispensing tool with a motor-driven rack system, featuring a transmission with clutch mechanisms and a planetary gear system that allows for controlled forward and reverse translation of the rack, reducing user effort and improving control through motorized operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manually operated dispensing tools are used with squeezing or grasping mechanisms, then the tool structure can be simple, but the operation becomes strenuous and difficult to control leading to user fatigue
Solution Approach 1:
The patent replaces the manual mechanical squeezing or grasping mechanism with an electric motor system. The motor is coupled to a transmission mechanism that drives a rack and plunger assembly, eliminating the need for manual force application. This substitution directly resolves the contradiction by providing effortless operation while accepting increased device complexity through the addition of motor and transmission components.
2Duration of action of moving object
If manually operated dispensing tools are used, then the device complexity remains low, but the duration of use is limited due to user fatigue requiring rest
Solution Approach 1:
By replacing the manual operation system with an automated motor-driven system, the patent eliminates the limiting factor of user fatigue. The motor can operate continuously without rest, enabling prolonged duration of use. The transmission mechanism and rack-plunger assembly provide sustained powered operation, resolving the contradiction between extended usage duration and increased device complexity.
3Measurement precision
If manual squeezing mechanisms are used, then the device structure can be simple, but control precision deteriorates making the tool difficult to control
Solution Approach 1:
The patent replaces the imprecise manual squeezing mechanism with a motor-driven transmission system that provides controlled, incremental movement of the rack and plunger. The transmission mechanism translates motor rotation into precise linear displacement, enabling accurate control of material dispensing. This substitution resolves the contradiction by achieving superior control precision through the more complex motorized system.
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 powered dispensing tool enhances control and reduces user fatigue by allowing for efficient and sustained operation, enabling precise dispensing of materials with reduced physical strain and increased usage time.
Implementation Method 1
a motor at least partially positioned within the housing
Implementation Method 2
a planetary gear system that allows for controlled forward and reverse translation of the rack
Data Source
AI summary
A powered dispensing tool includes a housing, a motor positioned within the housing, a rack coupled to the motor for powered translation in at least one of a forward direction and a reverse direction, and a transmission selectively coupling the motor and the rack. The transmission includes an input ring rotatable in response to rotation of the motor in a first direction corresponding with powered translation of the rack in the forward direction, a first clutch member engaged with the rack through an intermediate gear, and a second clutch member that receives torque from the input ring and that is movable in response to rotation of the motor in the first direction toward a first position engaging the first clutch member. The second clutch member is also movable in response to rotation of the motor in an opposite, second direction toward a second position disengaged from the first clutch member.