Fluid Transmission Coupling Independent Pressure Relief Cam
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Solution Overview
Problem
Current fluid transmission couplings require increasing effort to couple as residual pressure in the circuit increases, and existing solutions are mechanically cumbersome and not cost-effective, with a lack of independent pressure relief and user safety in accidental actuation scenarios.
Innovation Solution
A fluid transmission fitting with independent pressure-relieving cams, where the effort for coupling is minimized and independent of residual pressure, featuring a central locking system with a cam mechanism that allows for pressure relief and safe hydraulic control, using a lever-controlled cam system with independent upper and lower cams and a pressure relief valve to manage residual pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a conventional quick coupling fitting is used, then fluid transmission connection is achieved, but the coupling effort increases incrementally as residual pressure increases
Solution Approach 1:
The cam mechanism is divided into two independent members: a first cam member acting on a first female coupler and a second cam member acting on a second female coupler. This segmentation allows each cam member to independently relieve pressure in its respective hydraulic line without being constrained by the other, enabling pressure relief in multiple lines simultaneously and reducing the force required for coupling operations.
Solution Approach 2:
The cam mechanism acts as an intermediary device between the coupling operation and the pressurized fluid lines. By introducing the cam members as intermediate elements, the system can control and relieve pressure through a mechanical lever action, preventing direct pressure resistance during coupling while maintaining safety through controlled pressure release.
2Ease of operation
If a pressure compensation and relief system is added to make coupling effort constant, then coupling becomes easier, but the system becomes mechanically complex and not cost-effective
Solution Approach 1:
Instead of using complex pressure compensation systems that attempt to maintain constant pressure during coupling, the invention inverts the approach by using a cam mechanism to actively relieve pressure before and during coupling. The lever-controlled cam members rotate to mechanically push against the female couplers, forcing pressure relief in the opposite direction of pressure buildup, thereby simplifying the overall system while maintaining ease of operation.
3Reliability
If a central locking system is implemented, then coupling security is improved, but the system becomes mechanically cumbersome and ineffective in accidental actuation situations
Solution Approach 1:
The cam mechanism provides self-service pressure relief functionality where the lever operation automatically activates the cam members to relieve pressure in the hydraulic lines. The system serves itself by using the same lever that controls coupling to also control pressure relief, eliminating the need for separate complex locking and pressure management systems while maintaining reliability and reducing mechanical cumbersome elements.
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
The solution ensures effortless coupling regardless of residual pressure, simplifies the mechanical design, and enhances user safety by providing a pressure-relieving mechanism that can handle multiple pressurized lines, reducing the effort required for coupling and preventing accidental actuation issues.
Implementation Method 1
a lever (4) integral with a cam (7) adapted to relieve the pressure from a chamber (54) inside the female coupler (47)
Implementation Method 2
The cup (72) is pushed by a spring (84) against the cam (82) in releasing position of the shutter (25)
Data Source
AI summary
A fluid transmission fitting (100) includes at least two female couplers (47) inserted within a hydraulic feeding block (1), and at least two respective male couplers (48), which can be coupled to the female couplers (47). The block (1) includes at least two hydraulic lines (49) and at least one draining line (50), and a lever (4) integral with an independent member (82, 83) cam (7) adapted to relieve the pressure from a chamber (54) inside each female coupler (47) and adapted to uncouple the male coupler (48) from the respective female coupler (47). Each female coupler (47) includes a pressure relief valve (51), which puts the chamber (54) into connection with the draining line (50).