Pressurizing Device Lever Rotation Mechanism
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Solution Overview
Problem
Existing pressurizing devices require significant force to operate due to the difficulty in separating the screw portions of the plunger and nut member, leading to poor operability, especially when the balloon is inflated, and there is a need for a mechanism to firmly couple the syringe and body without using adhesives that could contaminate the fluid.
Innovation Solution
A pressurizing device incorporating a syringe, plunger, regulating member, lever, and rotation mechanism that allows for easy operation by reducing the force required to move the regulating member from the contact to separated position, and a coupling mechanism using elastic portions and engagement protrusions to securely attach the syringe and body, preventing detachment and maintaining a stable, adhesive-free connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a lever is used to separate the screw portions of the plunger and nut member, then the device can release the engaged state, but a large amount of force is required to operate the lever when the balloon is inflated, deteriorating operability
Solution Approach 1:
The patent introduces a rotation mechanism that converts the linear separation motion into rotational motion. The lever rotates about an axis perpendicular to the direction of force application, allowing the user to apply torque rather than direct linear force. This dimensional change in motion type reduces the operational force required while maintaining the separation function.
Solution Approach 2:
The rotation mechanism acts as an intermediary between the lever and the regulating member. Instead of the lever directly applying force to separate the screw portions, the rotation mechanism mediates this action by converting the lever's rotational input into the regulatory member's linear displacement, thereby reducing the force requirement through mechanical advantage.
2Reliability
If the syringe and body are firmly coupled, then the connection is stable and reliable, but adhesives may contaminate the fluid, compromising safety
Solution Approach 1:
The patent replaces the chemical bonding method (adhesives) with a purely mechanical coupling system. The coupling mechanism uses interlocking protrusions and recesses, along with elastic portions, to create a firm connection between the syringe and body without requiring any adhesive materials, thereby eliminating the risk of fluid contamination from adhesives.
Solution Approach 2:
The coupling mechanism is divided into separate coupling portions on the syringe and body that interlock together. This segmentation allows the two components to be firmly connected through mechanical interlocking rather than chemical bonding, ensuring reliability without contamination risk.
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 device improves user operability by reducing the force needed to operate the lever and ensures a firm, long-lasting coupling of the syringe and body, preventing fluid contamination and maintaining the balloon's inflated state efficiently.
Implementation Method 1
an elastic portion extending from a proximal end toward a distal end along a rotational direction
Data Source
AI summary
The pressurizing device includes a syringe configured to store a fluid, a plunger for discharging the fluid to the outside of the syringe when the plunger moves to one side in a first direction, a regulating member configured to move in a second direction intersecting the first direction, between a separated position of being separated from the plunger and a contact position of being in contact with the plunger, a lever configured to move the regulating member from the contact position to the separated position, and a rotation mechanism provided at a position overlapping with the regulating member in the second direction, configured to move in the second direction in accordance with rotation of the lever, and configured to move, when moving to one side in the second direction, the regulating member from the contact position to the separated position.