Self-Locking Clamping Nut Structure for Flexible Hose Connectors
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Solution Overview
Problem
Existing watering equipment faces challenges with inadequate connection and self-loosening of hoses, particularly with materials like textile and PVC, where a user-friendly and simple means for self-locking is lacking.
Innovation Solution
A clamping nut with a nut body having a hollow space, inner and outer surfaces, and angular surfaces that engage with a hose connector's outer thread section, providing a self-locking mechanism through clamping elements and a conical engagement portion for secure hose connection without external force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional screw nut is used for hose connection, then the hose can be connected to the connector, but the hose may self-loosen or become inadequate due to insufficient clamping force on flexible materials like textile and PVC
Solution Approach 1:
The clamping nut is designed with an integrated clamping mechanism that automatically engages with the hose when threaded onto the connector. The nut body includes internal clamping surfaces that self-adjust to the hose outer diameter, eliminating the need for separate clamping operations or external tools. This self-service mechanism ensures reliable connection while maintaining ease of operation.
Solution Approach 2:
The invention merges the connection function and clamping function into a single integrated clamping nut component. The nut body simultaneously performs threading engagement with the connector and circumferential clamping of the hose through its internal clamping surfaces, replacing what would traditionally require separate connection and clamping operations.
2Reliability
If multiple hose connectors are used to cover different hose materials, then connection reliability improves, but device complexity increases
Solution Approach 1:
The clamping nut is designed as a universal component that can accommodate various hose materials including textile, PVC, and other flexible materials. The internal clamping surfaces are shaped to engage with the outer diameter of different hose types, providing reliable connection across multiple material types through a single standardized component design.
Solution Approach 2:
The clamping nut utilizes the elastic deformability of flexible hoses as a parameter to achieve secure connection. The hose material's ability to deform elastically under the clamping force allows the nut to create a tight, self-adjusting grip that adapts to different material properties while maintaining consistent connection reliability.
3Reliability
If a clamping mechanism is added to prevent self-loosening, then connection reliability improves, but the operation becomes more complex requiring external force or tools
Solution Approach 1:
The clamping nut incorporates a self-adjusting clamping mechanism that automatically engages with the hose during the threading process. As the nut is screwed onto the connector, the internal clamping surfaces self-adjust to the hose outer diameter and apply circumferential clamping force without requiring external tools or additional manual operations, maintaining installation simplicity while ensuring anti-self-loosening capability.
Data Source
AI summary
A clamping nut (100) for a hose connector (200) includes a first angular surface (302) and a second angular surface (304) defined on an inner surface (122) of a nut body (110) towards the first end (112) and the second end (114) of the nut body (110). The first angular surface (302) and the second angular surface (304) are provided at a first angle (α) and a second angle (β) with a central axis (A-A′) of the nut body (110). A contact section (306) is defined on the inner surface (122) of the nut body (110) between the first angular surface (302) and the second angular surface (304). The contact section (306) is adapted to contact a hose (120) when the clamping nut (100) is threadedly coupled to the hose connector (200). Further, inner diameter (d) of the inner surface (122) of the clamping nut (100) across the contact section (306) is substantially identical to an outer diameter (D) of the hose (120), and the first angle (α) has a value in a range of about 90 to 120 degrees.