Flow Volume Control Device Resin Flange Welding
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Solution Overview
Problem
Conventional flow rate control devices have a complex structure with many components and assembly steps, making them costly and difficult to assemble.
Innovation Solution
A flow rate control device with a simplified structure using synthetic resin joining flanges and a heating element for welding, eliminating the need for fixing members like mounting plates or bolts, and incorporating welding restriction parts to maintain position and ensure sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a housing, mounting plate, and bolt structure is used to join the control base and actuator, then the connection is reliable, but the number of components and assembly steps increases
Solution Approach 1:
The patent merges the control base and actuator into a single integrated unit where the actuator is directly mounted on the control base without separate mounting plates or bolts. The control base itself serves as the mounting structure, eliminating the need for additional fastening components and reducing assembly steps while maintaining connection reliability.
2Strength
If multiple fixing members are used to secure the actuator, then the structural integrity is maintained, but the manufacturing cost increases
Solution Approach 1:
The control base is designed to directly support the actuator without requiring separate fixing members. The integrated structure reduces the number of parts that need to be manufactured and assembled, thereby lowering manufacturing costs while maintaining structural integrity through the unified design.
3Device complexity
If a simplified joining structure is used, then the number of components is reduced, but the sealing performance may deteriorate
Solution Approach 1:
The patent employs a diaphragm as a flexible sealing element within the integrated control base and actuator assembly. The diaphragm provides effective sealing between the control base and actuator without requiring additional sealing components or complex joining structures, thus maintaining sealing performance while keeping the design simplified.
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 reduces costs by simplifying the assembly process, stabilizes the control valve's opening and closing positions, and provides reliable sealing to prevent foreign matter entry, while maintaining the structural integrity and sealing efficiency.
Implementation Method 1
a heating element for welding a bottom part of the welding concave portion and a periphery of an extremity part of the welding convex portion is disposed between the bottom part and the extremity part
Data Source
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AI summary
A flow rate control device is provided in which a control base (5) is provided with a first joining flange (35), made of a synthetic resin, extending in a direction perpendicular to an axial direction of a mounting hole (19), a stator (20a) of an actuator (20) is provided with a second joining flange (36), made of a synthetic resin, opposing the first joining flange (35), a welding concave portion (39) is provided in one of opposing faces of the first and second joining flanges (35, 36), a welding convex portion (40) that is to be inserted into the welding concave portion (39) is provided on the other of the opposing faces, a heating element (44) for welding a bottom part of the welding concave portion (39) and a periphery of an extremity part of the welding convex portion (40) is disposed between the bottom part and the extremity part, and the first and second joining flanges (35, 36) are provided with welding restriction parts (45, 46) that maintain a defined value by abutting against each other when the amount of sinking of the bottom part and the extremity part during welding reaches the defined value. Thus, such a flow rate control device is provided that is equipped with a structure for joining a control base and an actuator, the structure having a small number of components and a simple structure and being inexpensive.