Grease Gun Connection Ring with Multi-Thread Adapter
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Solution Overview
Problem
Conventional grease guns are incompatible with grease sticks of different sizes due to varying connection neck diameters and thread sizes, limiting their versatility and leading to potential leaks during use.
Innovation Solution
A grease gun design featuring a connection ring with multiple inner threads, a groove, and an adapter with different thread sizes, allowing for seamless connection with grease sticks of various sizes, and incorporating seals to prevent leaks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the grease gun uses a fixed connection structure with single thread size, then the structure is simple, but it cannot be compatible with grease sticks of different sizes
Solution Approach 1:
The connection ring is designed with multiple sets of inner threads with different specifications (e.g., M10*1.5, M12*1.5, M14*1.5) so that a single connection ring can accommodate grease sticks of various sizes. This makes the grease gun universally compatible with different grease stick types without requiring multiple specialized connection components.
Solution Approach 2:
The connection ring acts as an intermediary component between the grease gun body and the grease stick. It provides a standardized interface with multiple thread options, mediating the connection between the fixed grease gun structure and the variable grease stick sizes, thereby enabling compatibility while maintaining structural simplicity.
2Reliability
If the grease gun uses a fixed connection structure without seals, then the structure is simple, but it causes leakage during use
Solution Approach 1:
The seal ring is introduced as an intermediary sealing element between the connection ring and the grease stick. This simple additive component ensures reliable sealing without requiring complex sealing mechanisms, thereby improving reliability while maintaining structural simplicity.
Solution Approach 2:
A flexible seal ring made of elastomeric material is used to create the sealing interface. The flexibility of this thin film component allows it to conform to the connection surfaces and maintain effective sealing under varying conditions, ensuring leak-free operation.
3Adaptability or versatility
If the connection ring directly connects to the grease stick, then the connection is simple, but it cannot securely connect grease sticks with different thread specifications
Solution Approach 1:
The connection ring incorporates multiple sets of inner threads with different specifications within a single component. This allows the same connection ring to securely connect to grease sticks with various thread sizes (e.g., M10, M12, M14) without requiring multiple specialized connection pieces, achieving universality without excessive complexity.
Data Source
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AI summary
A grease gun (1, 5) includes a body (1, 50, 51), a connection ring (2), an adapter (25), a hollow tube (3, 51) and a piston (32). The adapter (25) is connected to the connection ring (2) which is connected to the body (1, 50, 51) of the grease gun (1, 5), and the grease sticks (4A) can be connected directly to the connection ring (2), or to be connected to the adapter (25) which is connected to the connection ring (2). The grease stick (4A, 4B, 4C) is inserted into the tube (3, 51) and the piston (32) is received in the bottom end of the grease stick (4A, 4B, 4C). The connection ring (2), the adapter (25), the tube (3, 51) are suitable to be connected to the conventional grease gun (1, 5) without the conventional tube (3, 51), the rod (52) and the spring (53). The grease gun (1, 5) is cooperated with the grease sticks (4A) of different sizes.