Drum Magazine Cartridge Loading and Tension Control
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Solution Overview
Problem
Conventional drum-type magazines require strong force for loading cartridges and can lead to jamming, and the elasticity of tension members decreases over time, affecting cartridge feeding and firing efficiency.
Innovation Solution
A drum-type magazine design where a cartridge loading space is formed by rotating a cartridge guide unit using a cartridge loading unit, which can be easily loaded with cartridges using a small force, and the elasticity of the tension member is controlled through a tension control unit to maintain efficient support of cartridges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If cartridges are sequentially inserted into a cylindrical drum one by one with strong force, then the magazine can be loaded with cartridges, but the user feels inconvenience and the loading process requires excessive force
Solution Approach 1:
The magazine is divided into a stationary drum unit and a movable cartridge guide unit. The cartridge guide unit is segmented from the drum unit and can be rotated independently to create loading spaces, allowing cartridges to be loaded sequentially into guided positions rather than forcing them into a closed cylindrical drum.
Solution Approach 2:
The cartridge guide unit is made movable and rotatable relative to the drum unit. By rotating the cartridge guide unit, loading spaces are dynamically created and eliminated, enabling easy cartridge insertion and removal without requiring strong forcing actions.
2Quantity of substance
If cartridges are loaded into a cylindrical drum, then the magazine can store multiple cartridges, but the loaded cartridges may become jammed and loading efficiency is reduced
Solution Approach 1:
The separation of the cartridge guide unit from the drum unit allows cartridges to be guided through a dedicated loading path. This segmentation prevents cartridges from becoming jammed in the drum cavity and improves loading efficiency by providing a clear insertion route.
Solution Approach 2:
The cartridge guide unit acts as an intermediary mechanism between the user and the drum unit. It guides cartridges into the drum through a controlled path, preventing direct insertion into the drum cavity and reducing the risk of jamming.
3Duration of action of stationary object
If the magazine is repeatedly used over a lengthy period, then the tension member supports loaded cartridges, but the elasticity of the tension member is reduced and it fails to precisely feed cartridges
Solution Approach 1:
The tension control unit allows dynamic adjustment of the tension member's elasticity. Users can rotate the tension control unit to tighten or loosen the tension member, compensating for elasticity loss over time and maintaining reliable cartridge feeding precision throughout the magazine's service life.
Solution Approach 2:
The tension member's elasticity parameter can be adjusted through the tension control unit. By changing the tension parameter, the system compensates for the gradual degradation of elasticity due to repeated use, ensuring consistent cartridge support and feeding performance.
4Reliability
If the elasticity of the tension member is reduced over time, then the tension member cannot efficiently support cartridges, but adjusting the tension member requires additional mechanisms
Solution Approach 1:
The tension control unit enables users to self-adjust the tension member's elasticity without requiring external tools or complex mechanisms. The simple rotational interface allows users to maintain optimal tension manually, keeping the overall system complexity low while ensuring reliable cartridge support.
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 easy and efficient loading of cartridges with reduced force and maintains effective cartridge support and feeding even after prolonged use by adjusting the tension member's elasticity.
Implementation Method 1
a rotation piece (163) combined with the cartridge loading lever (161) and operated to rotate the tension control unit (150) when loading the drum unit (110) with a cartridge (10); a first spring (164) elastically returning the rotation piece (163) to an initial position thereof
Implementation Method 2
a cartridge loading lever (161) mounted to the outer surface of the drum unit (110) and rotating the cartridge guide unit (130) by an operation of a cartridge loading lever, thereby forming a cartridge loading space in the drum unit (110) for being loaded with cartridges (10), in which the cartridge loading lever (161) is immediately returned to an initial position thereof by a second spring (167)
Implementation Method 3
a tension member (140) mounted to an outer surface of the drum unit and elastically supporting the cartridge guide unit (130)
Data Source
AI summary
A drum-type magazine in which a cartridge loading space for being loaded with cartridges can be formed in a drum unit when rotating a cartridge guide unit by an operation of a cartridge loading unit, and the cartridge loading unit can be immediately returned to an initial position thereof, so a user can easily load the magazine with cartridges using a small force. The drum-type magazine is also configured such that, even when the magazine is repeatedly used over a lengthy period of time and the elasticity of a tension member is reduced, the elasticity of the tension member can be increased by rotating a tension control unit, so the magazine can be efficiently loaded with cartridges and can efficiently support the loaded cartridges.