Valve Retainer Assembly With Elastic Caulking Stability
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Solution Overview
Problem
The solenoid valve in existing technologies faces issues with the caulking piece deformation due to aging, leading to potential gaps and rattling between the retainer and sleeve, compromising the stability of the fixed state.
Innovation Solution
A valve design featuring a retainer with a cylindrical portion and an expanded diameter portion in a tapered shape, where the caulking end is locked to the outer peripheral portion, allowing for elastic deformation and maintaining contact through the elastic restoring force of the connection portion, preventing rattling and ensuring a stable fixed state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the flange is axially sandwiched between the caulking piece and the end surface of the sleeve, then the retainer and the sleeve can be strongly and simply fixed, but the caulking piece may be deformed due to aging, leading to gaps and rattling between the retainer and the sleeve
Solution Approach 1:
The invention changes the geometric parameters of the retainer by adding an expanded diameter portion with a tapered shape. This structural parameter change allows the connection portion to be elastically deformable, enabling the caulking end to maintain contact through elastic restoring force even when deformed by aging, thus resolving the contradiction between strong fixing and long-term stability
Solution Approach 2:
The invention introduces dynamic characteristics to the previously static connection by making the connection portion elastically deformable. The elastic restoring force allows the system to adapt to aging deformation dynamically, maintaining the fixed state stability while preserving the strong fixing capability
2Ease of manufacture
If the caulking piece is bent radially inward to fix the retainer, then the fixing is simple and strong, but the caulking piece deformation due to aging causes gaps and rattling
Solution Approach 1:
The invention modifies the retainer's geometric parameters by incorporating an expanded diameter portion, which creates an elastically deformable connection portion. This parameter change maintains the simplicity of the bending fixation process while adding the capability to compensate for aging deformation, thus preserving both ease of manufacture and fixed state stability
3Strength
If a rigid connection is used between the retainer and casing, then the fixing is strong, but any deformation due to aging immediately causes gaps and rattling
Solution Approach 1:
The invention changes the physical state of the connection portion from rigid to elastically deformable by designing the connection portion between the cylindrical portion and expanded diameter portion with elastic properties. This allows the connection to maintain strength while absorbing aging deformation, preventing gaps and rattling
Solution Approach 2:
The elastically deformable connection portion acts as a pre-designed cushion against aging deformation. The elastic restoring force provides beforehand protection against the harmful effects of aging, compensating for deformation before it can cause gaps and rattling between the retainer and casing
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 design maintains a stable fixed state between the retainer and casing over time by utilizing the elastic restoring force, preventing rattling and allowing precise adjustment of the biasing force, thus enhancing the valve's operational stability and reliability.
Implementation Method 1
a connection portion between the cylindrical portion and the expanded diameter portion is elastically deformable
Data Source
AI summary
A valve capable of maintaining a stable fixed state between a retainer and a casing for a long period of time and a method of assembling the valve are provided. A retainer includes a cylindrical portion which has a seat surface for a biasing member and an expanded diameter portion which expands radially outward in a tapered shape from one axial end of the cylindrical portion on a side of a casing, and a caulking end is locked to an outer peripheral portion of the expanded diameter portion while a connection portion between the cylindrical portion and the expanded diameter portion is elastically deformable.