Check Joint Structure for Air Nozzle Connection
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Solution Overview
Problem
Conventional air nozzle and tire repair devices often experience counterflow and eruption of chemical sealant due to improper connection between the connection hose and air nozzle, leading to inefficient tire inflation and sealant distribution.
Innovation Solution
A check joint structure with a fitting sleeve, cylindrical base, and valve bolt assembly that includes a spring mechanism and abutting rings to prevent counterflow and eruption by controlling the flow of chemical sealant through a threaded orifice and conduit system, ensuring proper sealing and inflation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional connection structure is used between the connection hose and air nozzle, then the device is simple and easy to operate, but chemical sealant eruption and counterflow occur due to improper connection
Solution Approach 1:
The check valve assembly is nested within the connection hose structure, with the valve body integrated into the hose and the valve core positioned inside the valve body. This nested arrangement prevents chemical sealant eruption while maintaining a compact and relatively simple overall structure, resolving the contradiction between reliability improvement and device complexity.
Solution Approach 2:
The check valve assembly acts as an intermediary component between the connection hose and air nozzle, providing a controlled flow path that prevents backward flow of chemical sealant. This intermediary mechanism ensures reliable prevention of sealant eruption without requiring complete redesign of the entire connection system.
2Reliability
If a check valve assembly is added to prevent chemical sealant eruption, then the reliability improves, but the device complexity increases
Solution Approach 1:
The check valve assembly is segmented into distinct functional components: the valve body providing the flow path, the valve core that moves to control flow direction, and the spring that provides restoring force. This segmentation allows each component to be optimized for its specific function while maintaining overall simplicity, preventing chemical sealant counterflow without excessive complexity.
Solution Approach 2:
The check valve assembly is designed to operate automatically based on flow direction, with the spring and valve core working together to close the flow path when reverse flow occurs. This self-service mechanism prevents chemical sealant counterflow without requiring external control systems, reducing overall device complexity while improving reliability.
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
Effectively prevents the eruption of chemical sealant during incorrect operations and ensures efficient feeding and inflation of tires with compressed air, maintaining a secure connection between the air nozzle and connection hose.
Implementation Method 1
a first spring received into the cylindrical base so that a first end of the first spring pushes a first abutting ring fitted on the valve bolt
Implementation Method 2
a check connector connected on the second segment 42 of the connection hose 4... capable of avoiding counterflow and eruption of chemical sealant
Data Source
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AI summary
A device with a check joint structure for a connection of an air nozzle (9) of a tire (99) and a connection hose (4) of an air compressor contains: a box (1), a sealant supply can (2), and a connection hose (4). The box (1) includes a body of the air compressor. The sealant supply can (2) includes an open segment (21) and a supply tube (23). The connection hose (4) includes a first segment (41) and a second segment (42). The second segment (42) has a check connector (5) which includes a fitting sleeve (6), and the fitting sleeve (6) has a threaded orifice (61), a through orifice (620), and a projected shoulder (62). A cylindrical base (7) includes a cylindrical room (70), a stepped coupling segment (72), a conduit (73), and a first stepped portion (74). A first spring (51) is received into the cylindrical room (70) to abut against the first stepped portion (74). A valve bolt (52) includes a contacting element (53), at least one cutout (531), a head (54), a conical rib (55), and a neck (56).