Hydraulic Valve Tappet Guide via Elastic Holding Element
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Solution Overview
Problem
Existing hydraulically controlled accumulator chamber valves require complex and costly manufacturing processes due to precise alignment and guidance of tappets, leading to high production costs and accuracy requirements.
Innovation Solution
An elastic holding element is attached to the valve body to guide the plunger, allowing the accumulator piston to exert the opening force on the closing element without needing an axial guide, enabling the use of standard pistons and reducing manufacturing complexity and costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a complex axial guide for the tappet is implemented inside the accumulator chamber valve to ensure precise alignment, then the reliability of the valve is improved, but the device complexity and manufacturing cost increase significantly
Solution Approach 1:
The guidance function is extracted from the accumulator chamber valve body and transferred to a separate guide element positioned in the valve bore. This separates the guidance function from the main valve structure, simplifying the overall device complexity while maintaining alignment reliability through a dedicated guide component.
Solution Approach 2:
A guide element is introduced as an intermediary component between the tappet and the valve body. This mediator provides the necessary alignment and guidance for the tappet without requiring complex integrated guidance structures in the valve body itself, thus reducing manufacturing complexity while ensuring reliable operation.
2Manufacturing precision
If high precision manufacturing and assembly processes are used to ensure accurate tappet alignment with the closing element, then the manufacturing precision is improved, but the production cost and time increase
Solution Approach 1:
The guide element provides self-aligning features that automatically ensure proper tappet positioning during assembly. The guide bore and guide element dimensions are designed to provide inherent alignment, eliminating the need for complex precision alignment procedures and specialized assembly processes, thus improving manufacturing ease while maintaining precision.
Solution Approach 2:
The dimensional parameters of the guide element and guide bore are optimized to provide adequate clearance and alignment tolerance. By carefully selecting these parameters, the system achieves reliable tappet guidance without requiring extreme manufacturing precision, thereby reducing production costs and simplifying the manufacturing process.
3Reliability
If special piston designs with integrated tappets and guide rings are used, then the functional robustness is improved, but the device complexity and production costs increase
Solution Approach 1:
The system is segmented into separate functional components: a standard accumulator piston, a separate guide element, and a tappet. This segmentation allows each component to be manufactured using standard processes and then assembled together, reducing the complexity of individual parts while maintaining the functional robustness of the complete assembly.
Solution Approach 2:
The guide element serves multiple functions: it guides the tappet, provides alignment reference, and enables the use of standard pistons. By creating a universal guide component that performs these multiple functions, the system achieves functional robustness without requiring specially designed complex pistons, thereby reducing overall device complexity.
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
This solution simplifies the manufacturing process, reduces production costs, and increases functional robustness by eliminating the need for precise alignment and special piston designs, while allowing for eccentric arrangements and non-linear movements of the accumulator piston.
Implementation Method 1
an elastic holding element is fastened with receiving means on the valve body in order to guide the plunger in the passage
Implementation Method 2
a tappet which is connected to an accumulator piston acted upon by a second compression spring
Data Source
Figure 1~2
AI summary
The invention relates to a hydraulically controlled storage chamber valve (1) having a closing element (20) that is biased via a first compression spring (14), said closing element (20) sealing a valve seat (36) in a valve body (32), and a tappet (22) that protrudes through a bushing (35) in the valve body (32) and is movable by an accumulator piston (10) that is loaded by a second compression spring (15) in order to push the closing element (20) out of the valve seat (36) when a specified force ratio is present between the spring bias forces and a hydraulically acting force. According to the invention, the tappet (22) is fastened in the region of the bushing (35) in such a way that it is movable in a longitudinal direction and lies flush with a face of the accumulator piston (10) while moving.