Dual-Cartridge Caulking Gun With Switchable Torque Control
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Solution Overview
Problem
Conventional dual-cartridge caulking guns lack adjustable torque for synchronously squeezing sealants with different viscosities, leading to incorrect mixing ratios and operational inconvenience due to fixed lever force and complex structure.
Innovation Solution
A caulking gun with an adjustable torque mechanism via a switchable lever and a switch mechanism that allows for varying torque settings, enabling synchronized or asynchronous movement of push rods based on sealant properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional dual-cartridge caulking gun uses a fixed torque lever to drive two push rods synchronously, then the structure is simple, but the torque cannot be adjusted to meet different requirements of sealants with different viscosities, causing incorrect mixing ratios
Solution Approach 1:
The patent applies the dynamics principle by making the lever system adjustable rather than fixed. The switch mechanism allows the lever to change its pivot position or torque multiplication ratio dynamically, enabling the same lever to provide different torque levels for squeezing sealants of varying viscosities. This resolves the contradiction by allowing torque adaptation without fundamentally changing the lever mechanism's basic structure.
Solution Approach 2:
The patent implements parameter changes by allowing the torque parameter to be adjusted through the switch mechanism. Different switch positions correspond to different torque output levels, enabling the operator to match the torque to the specific viscosity requirements of the sealants being used. This maintains structural simplicity while achieving adaptability through parameter variation.
2Manufacturing precision
If a conventional dual-cartridge caulving gun has a fixed lever torque, then the device structure is simple, but it cannot achieve precise mixing ratios for sealants with different fluidity and viscosity
Solution Approach 1:
The switch mechanism enables dynamic adjustment of torque, allowing the operator to optimize the mixing ratio for different sealant combinations. This dynamic capability improves mixing precision without significantly complicating operation, as the adjustment is made through a simple switch rather than complex controls.
Solution Approach 2:
By changing the torque parameter through the switch mechanism, the system can precisely control the force applied to each push rod, ensuring accurate mixing ratios. The parameter change is implemented in a way that maintains ease of operation through intuitive switching rather than complex adjustments.
3Adaptability or versatility
If the cartridge sleeve of the conventional dual-cartridge caulking gun is designed with a complicated structure, then it may provide functional versatility, but it results in large volume and heavy weight making it inconvenient to operate
Solution Approach 1:
The cartridge sleeve is designed as a separable component that can be independently removed and replaced. This segmentation allows the sleeve to be lightweight and simple in structure, while still providing versatility through easy replacement with different cartridge configurations for different sealant types.
Solution Approach 2:
The cartridge sleeve is extracted as a separate, replaceable module from the main gun body. This extraction allows the sleeve to be optimized for minimal weight and simple structure, while the versatility function is achieved through the ability to swap different cartridge configurations rather than through complexity in the sleeve itself.
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
Enables precise mixing ratios and labor-saving operation by adjusting torque and sealant squeezing forces, improving usability and reducing complexity.
Implementation Method 1
the lever includes an abutting portion which is abuttable against the driving member. When the switch member is in the first position, the abutting portion generates a first torque to urge the driving member; when the switch member is in the second position, the abutting portion generates a second torque different from the first torque to urge the driving member.
Implementation Method 2
the abutting portion generates a first torque to urge the driving member; when the switch member is in the second position, the abutting portion generates a second torque different from the first torque to urge the driving member.
Data Source
AI summary
A caulking gun includes is provided, including: a gun body, a cartridge sleeve, two push rods, a driving member, a lever and a switch mechanism. The cartridge sleeve is rotatably connected to the gun body and configured to receive two sealants. The two push rods are movably disposed on the gun body. The driving member is movably disposed on the gun body and drives the two push rods to move. The lever is swingably disposed on the gun body about a pivot center and includes an abutting portion which is abuttable against the driving member. The switch mechanism is disposed between the gun body and the lever and includes a switch member being movable between a first position and a second position.