Breech Block Ejector Mechanism to Reduce Lever Wear
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing barrel weapon ejector systems experience high wear due to direct contact and shock-like actuation between the opening lever and the ejector lever, leading to reduced service life.
Innovation Solution
A closure system with a transmission element that transmits rotational movement from the opening lever to the ejector lever indirectly, using contact rollers and a pretensioning element to avoid direct impact, ensuring a rolling action and controlled movement characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the opening lever directly actuates the ejector lever, then the ejection function is achieved, but high wear occurs due to direct contact and shock-like actuation
Solution Approach 1:
A transmission element with contact rollers is introduced as an intermediary between the opening lever and the ejector lever. This transmission element receives rotational movement from the opening lever and transmits it to the ejector lever, avoiding direct contact between the two levers. The contact rollers ensure rolling action instead of sliding friction, significantly reducing wear on the opening lever and ejector lever while eliminating shock-like actuation.
2Reliability
If a transmission element with contact rollers is introduced, then wear is reduced and service life is extended, but the device complexity increases
Solution Approach 1:
The transmission element serves as a compact intermediary mechanism that, while adding structural elements, provides significant functional benefits through rolling contact. The design integrates the transmission element into the existing lever system in a space-efficient manner, and the contact rollers are simple cylindrical components that minimize complexity while maximizing wear reduction.
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
This design reduces wear on the opening and ejector levers, extending their service life and ensuring safe and efficient ejection of cartridge cases.
Implementation Method 1
using contact rollers and a pretensioning element to avoid direct impact, ensuring a rolling action and controlled movement characteristics
Implementation Method 2
A rotational movement of the opening lever is first transmitted to the transmission element, which in turn transmits the rotational movement to the ejector lever
Data Source
Figure 1
Figure 2
Figure 3a~3b
AI summary
The invention relates to a breech block, in particular wedge breech block, having a breech end and a breech wedge, and comprising an opener shaft with a rotationally coupled opening lever and an ejector system for pulling out cartridge cases or cartridge bases from the breech block, said ejector system comprising at least one ejector and at least one ejector lever that actuates the ejector, the ejector lever being rotationally movably mounted on the opener shaft and the ejector system comprising at least one transmission element that transmits a rotational movement of the opening lever to the ejector lever.