Integrated Pistol Locking Block and Guide Unit
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Solution Overview
Problem
The production of pistols with plastic housings faces challenges in accurately inserting metal parts for guiding the sliding carriage and locking mechanisms, leading to labor-intensive processes and increased costs due to thermal expansion and the need for mechanical processing.
Innovation Solution
The locking block and guide of the sliding carriage are integrated as a single unit, with the locking block fixed using cross pins, allowing for precise and cost-effective assembly without additional post-processing, and utilizing guide plates that can be stamped for precision and reduced material costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If metal parts for guiding the sliding carriage are injection molded with positionally accurate insertion, then manufacturing precision is improved, but device complexity and labor intensity increase due to the need for precise positioning and potential post-processing
Solution Approach 1:
The patent combines the locking block and guide for the sliding carriage into a single integrated unit made of plastic. This merging eliminates the need to separately insert metal guide parts into the housing, thereby reducing device complexity and labor intensity while maintaining manufacturing precision through injection molding of the integrated unit.
2Device complexity
If a multifunction part extending along the larger portion of the pistol is used, then device complexity is reduced, but manufacturing cost increases and thermal expansion considerations complicate tolerance selection
Solution Approach 1:
The patent segments the guide system into a compact unit consisting of the locking block and guide integrated together, positioned only in front of the magazine well. This segmentation avoids the need for a long multifunction part, reducing material consumption and production costs while simplifying tolerance considerations by eliminating thermal expansion issues associated with long components.
3Stability of the object's composition
If guide elements at the front and rear end of the housing are used, then guidance stability is improved, but device complexity and processing costs increase
Solution Approach 1:
The patent merges the functions of front and rear guide elements into a single integrated locking block with guide features. The guide for the sliding carriage is formed as part of the locking block structure, eliminating the need for separate guide elements at the front and rear ends of the housing, thereby reducing device complexity while maintaining guidance stability.
4Ease of operation
If the locking block and guide are produced as separate parts, then ease of assembly is improved, but manufacturing precision and time consumption worsen due to multiple fastening operations
Solution Approach 1:
The patent merges the locking block and guide into a single integrated unit that is injected as one piece. This eliminates the need for multiple fastening operations and positioning steps, thereby achieving both ease of assembly (as a single component) and high manufacturing precision through injection molding, while reducing time consumption.
Data Source
AI summary
A pistol is provided, on the plastic housing of which a sliding carriage containing the barrel is guided in the longitudinal direction, which housing has a trigger guard at the transition to a grip stock, and in which housing a locking block is arranged; for an especially light embodiment that is simple to manufacture and nevertheless robust, the locking block forms a unit with the guiding elements of the sliding carriage, which unit is arranged in front of the magazine well and extends forward as far as the trigger guard, as a result of which the guide length is shortened. The locking block is fixed in the housing by a front cross pin and a rear cross pin and accommodates a locking bolt approximately over the second cross pin.