Mortise-Tenon Air Pump Locking Mechanism
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Solution Overview
Problem
Conventional air pumps are prone to disassembly due to collisions and shocks during transportation, leading to component loss, and the air pressure gauge is inconveniently positioned, preventing accurate pressure detection.
Innovation Solution
A mortise-tenon jointed air pump design featuring a holding base with engaging protrusions and a connector assembly that securely locks the inflation cylinder in place, preventing disassembly and allowing continuous air pressure detection through a divided housing structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the holding base and inflation cylinder assembly are connected via external thread and internal thread, then the assembly is easy to disassemble, but the connection becomes loose and separates easily due to collision and shocks during transportation
Solution Approach 1:
The connector is divided into multiple components: a connector body with engaging grooves, engaging protrusions on the holding base, and retaining blocks that lock the connection. This segmentation allows for both easy assembly (screw-threaded connection) and secure locking (engaging protrusions and retaining blocks) to prevent separation during transportation
Solution Approach 2:
The engaging protrusions are pre-formed on the holding base and the engaging grooves are pre-formed on the connector body. These features are prepared in advance during manufacturing, allowing the components to automatically engage and lock when assembled, preventing loosening before actual use
2Measurement precision
If the air pressure gauge communicates with the inner flow channel through a through hole in the holding base, then the gauge can detect air pressure, but the piston blocks the flow channel when positioned between the first end and the through hole, preventing accurate pressure detection
Solution Approach 1:
The holding base is divided into two separate chambers: a first chamber containing the air pressure gauge and communication with the inner flow channel, and a second chamber containing the piston and inflation cylinder assembly. This segmentation ensures the piston cannot block the pressure sensing path, allowing continuous accurate pressure detection regardless of piston position
Solution Approach 2:
The divided housing structure acts as an intermediary that separates the pressure sensing function from the piston movement function. The first chamber serves as an intermediate space that maintains continuous communication with the inner flow channel while being isolated from direct piston interference
Data Source
AI summary
A mortise-tenon jointed air pump has a holding base, an inflation cylinder assembly, an inflation connector assembly, and an air pressure gauge. The holding base has a hollow housing. The inflation cylinder assembly is connected to an inlet end of the housing. The inflation connector assembly is mounted in an exhaust opening of the housing. The air pressure gauge is mounted in a pressure sensing portion of the holding base. The housing of the holding base and a connector of the inflation cylinder assembly are connected with each other by engaging at least one engaging protrusion in at least one engaging groove. Moreover, by inserting at least one retaining block through the housing and the connector, a relative position of the connector and the holding base is locked.