Link Type Percussion Lock for Compact Firearm Design
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Solution Overview
Problem
Conventional percussion locks in firearms require longer hammer lengths due to rotary motion, limiting design flexibility and increasing the volume and weight of the firearm.
Innovation Solution
A percussion lock design featuring a link member that maintains the hammer in a horizontal state, supported by an elastic member, allowing the hammer to move on a curved path and reducing the need for extended lengths, with a buckling latch and sear mechanism to control the link member's movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If the hammer is designed with rotary motion to hit the firing pin, then the hammer can effectively deliver impact, but the hammer length must be extended, increasing the radius of rotation and thereby increasing the volume and weight of the firearm
Solution Approach 1:
The patent introduces a link member that guides the hammer to move along a curved arc path rather than a straight linear path. This curved motion allows the hammer to achieve the necessary impact force while operating within a more compact spatial envelope, thereby reducing the overall volume of the firearm without sacrificing the hammer's striking capability.
Solution Approach 2:
The patent transitions from a simple rotary motion (two-dimensional rotation) to a复合 motion that incorporates both rotation and translation along a curved path (three-dimensional motion). The link member adds an additional degree of freedom, allowing the hammer to move in an arc that combines rotational and translational components, thus achieving compactness while maintaining impact effectiveness.
2Force
If the hammer length is extended to reach the firing pin remotely, then the hammer can effectively hit the firing pin, but the design flexibility of the firearm is limited and the weight increases
Solution Approach 1:
The patent employs a dynamic link member mechanism that allows the hammer to move along a configurable curved path. This dynamic arrangement provides design flexibility, as the curvature and dimensions of the link member can be adjusted to accommodate different firing pin positions and firearm configurations, enabling versatile design adaptations without increasing hammer length or weight.
3Volume of moving object
If a link member is introduced to maintain horizontal motion and reduce hammer length, then the firearm volume and weight are reduced, but the device complexity increases
Solution Approach 1:
The patent divides the hammer mechanism into separate functional components: the hammer itself, the link member, and the elastic member. This segmentation allows each component to be optimized independently and facilitates easier manufacturing and assembly. The link member is further divided into first and second link members connected by hinges, which simplifies the overall structure while maintaining the curved motion function.
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 the firearm to fire a bullet in a smaller space, enhancing design flexibility and reducing the firearm's volume and weight.
Implementation Method 1
an elastic member supporting the link member with elastic force
Implementation Method 2
a spring (not illustrated) supporting the hammer 10 through elastic force
Data Source
Figure 1~3
AI summary
Disclosed is a percussion lock installed on a firearm, and more particularly, to a percussion lock wherein the hammer is operated through a link member so that operation of the firearm is possible in a small area, making it possible to design a firearm flexibly and reducing the volume and weight of the firearm. According to the present invention, the percussion lock installed on a firearm to fire a bullet by hitting a firing pin comprises a housing mounted in fixed state to a firearm, a hammer installed on the upper part of the housing for hitting a firing pin, a link member linking the hammer and the housing so that the hammer moves on a curve maintaining horizontal state, and an elastic member supporting the link member with elastic force.