Integrated Push-Pull Lock Housing Assembly
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Solution Overview
Problem
The existing push-pull passage locks have complex structures that complicate assembly and installation, and are prone to reset spring failures over time, leading to difficulties in inserting the latch bolt into the door frame.
Innovation Solution
A push-pull passage lock housing design featuring an upper and lower housing connected by a first and second connecting component, with a guide pillar and limit chamber, and limiting stoppers to simplify assembly and prevent vertical movement, allowing for efficient and accurate assembly and reducing the risk of reset spring failure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a traditional push-pull passage lock structure with multiple components (latch bolt, sliding frame, cam, reset spring) is used, then the locking function is achieved, but the assembly complexity increases and assembly efficiency decreases
Solution Approach 1:
The patent merges the latch bolt, sliding frame, cam, and reset spring into a single integrated locking component. This component combines the functions of all four separate parts, allowing the locking mechanism to operate without requiring assembly of multiple discrete components. The integrated design directly reduces assembly complexity and improves assembly efficiency by eliminating the need to assemble and coordinate multiple parts.
Solution Approach 2:
The integrated locking component performs multiple functions simultaneously: it provides the latch mechanism, the sliding action, the cam rotation for bolt retraction, and the reset function. This multi-functional design eliminates the need for separate components for each function, thereby simplifying the overall structure and reducing assembly steps.
2Reliability
If a traditional push-pull passage lock structure with multiple components is used, then the locking function is achieved, but the number of components increases making assembly difficult
Solution Approach 1:
The patent combines multiple functional components into a single integrated locking component, reducing the number of parts from four (latch bolt, sliding frame, cam, reset spring) to one. This merger maintains all necessary locking functions while eliminating the complexity of coordinating multiple components during assembly and operation.
Solution Approach 2:
The locking component is designed as a unified integrated unit that can be installed as a single assembly, segmenting the installation process into simpler steps. Rather than installing and adjusting multiple separate components, the integrated design allows for single-unit installation while maintaining internal functional segmentation for latch, slide, cam, and reset operations.
3Ease of operation
If a traditional push-pull passage lock with reset spring is used, then the latch bolt can be reset, but the reset spring may fail after long-term service
Solution Approach 1:
The patent extracts the reset spring from the integrated locking component, making it a separate replaceable element. This allows the reset spring to be independently maintained or replaced without replacing the entire locking mechanism. The reset spring remains accessible for maintenance while the core locking functions continue to operate, improving long-term reliability through easier maintenance.
Solution Approach 2:
The design allows the reset spring to be discarded and replaced when it fails after long-term service. The integrated locking component can continue to function while the reset spring is recovered (removed) and replaced with a new one, extending the overall service life of the locking mechanism without requiring complete replacement.
Data Source
AI summary
A push-pull passage lock housing comprises upper and lower housings, and first and second connecting components. The upper and lower housings are connected to form a housing with a middle protuberance. The first connecting component is sleeved on the housing and located at one side of the protuberance, while the second connecting component is sleeved on the housing and located at the other side of the protuberance. The first and second connecting components are fastened together. The push-pull passage lock housing facilitates installation and improves assembly efficiency.