Linear Bolt Mechanism for Gun With Segmented Locking Lugs
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Solution Overview
Problem
Existing bolt action guns require rotational motion of the bolt assembly to engage and disengage locking lugs, limiting the ability to open and close the breech without handedness and increasing mechanical complexity.
Innovation Solution
A linear bolt mechanism that moves along a longitudinal axis between firing and loading positions, utilizing a locking pin and actuator to selectively lock and unlock the bolt without rotational motion, allowing for equal left or right hand operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a rotary lock-up bolt locking system is used, then the bolt can engage and disengage locking lugs to support rearward axial load, but the entire bolt head assembly must rotate which increases mechanical complexity and limits operation to handed motions
Solution Approach 1:
The bolt assembly is segmented into separate functional components: the bolt body that translates linearly, and the locking lugs that rotate independently on a pivot pin. This segmentation allows the locking function to be decoupled from the linear motion function, enabling simple linear bolt movement while maintaining robust locking capability through the separate rotating lug mechanism.
2Ease of operation
If the bolt head assembly rotates to engage and disengage locking lugs, then the locking function is achieved, but the mechanism requires handed motions and cannot be operated equally with left or right hand
Solution Approach 1:
Instead of rotating the entire bolt head assembly as in conventional designs, this invention inverts the approach by having the locking lugs rotate independently on a pivot pin while the bolt body moves linearly. This inversion eliminates the need for handed rotational motions, allowing the bolt to be operated equally with either hand by simply pushing or pulling the bolt handle in straight lines.
3Reliability
If the locking lugs are integral components of the bolt head, then the locking function is achieved, but the entire bolt head must rotate which limits operational flexibility
Solution Approach 1:
The locking lugs are separated from the bolt head and mounted as independent components that rotate on a pivot pin. This segmentation allows the bolt body to move linearly for simple operation while the separate lugs provide reliable locking engagement through their rotational motion on the pivot pin, achieving both operational simplicity and locking reliability.
4Productivity
If a conventional rotary bolt mechanism is used, then the breech can be opened and closed, but rotational motion is required which increases mechanical complexity
Solution Approach 1:
The conventional rotary bolt mechanism is inverted by making the bolt body move linearly while the locking lugs rotate independently on a pivot pin. This inversion eliminates the need for complex rotational bolt movement, allowing rapid breech operation through simple linear pushing or pulling motions while maintaining effective locking through the rotating lug mechanism.
Data Source
AI summary
A linear bolt mechanism for a gun is provided, wherein a bolt moves between a firing position and an open position through linear motion, without requiring rotation of the bolt. The bolt includes a seating socket which engages a locking pin to permit travel of the bolt upon disposing the locking pin in a traveling position. The seating socket also engages the locking pin when the locking pin engages the locking socket, thereby precluding movement of the bolt with the locking pin in the locking position.