Manual Dual-Directional Inflating Device With Switching Mechanism
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Solution Overview
Problem
Conventional inflating devices are limited to unidirectional operation, leading to inefficient inflation and accidental switching between large and small pumps, resulting in high resistance and inconvenience during use.
Innovation Solution
A manual dual-directional inflating device with a body, large and small cylinders, a handle, switching mechanism, and check valves, allowing air to be supplied in both directions through a switching mechanism that prevents unintentional switching and enhances inflation efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional inflating device with large and small pumps combined is used, then convenience is improved, but the device can only inflate unidirectionally resulting in low inflation speed
Solution Approach 1:
The patent implements dual-directional pumping capability where the handle can be operated in both upward and downward directions, with the large cylinder providing high-speed inflation in one direction and the small cylinder providing controlled inflation in the opposite direction. This dynamic bidirectional operation resolves the contradiction by enabling both high productivity and operational convenience.
Solution Approach 2:
The inflating device is segmented into two independent pumping systems (large cylinder and small cylinder) that can operate independently or in coordination. The large cylinder handles high-volume inflation while the small cylinder provides precision control, allowing the device to achieve both high speed and convenience through functional segmentation.
2Adaptability or versatility
If a conventional inflating device with switchable large and small pumps is used, then versatility is improved, but accidental switching occurs resulting in inconvenience
Solution Approach 1:
The switching between large and small cylinder operation is achieved through the natural direction of handle movement rather than requiring a separate switching mechanism. The device automatically selects the appropriate cylinder based on the pumping direction, eliminating accidental switching while maintaining versatility through self-service operation.
Solution Approach 2:
The patent employs asymmetric design where the large and small cylinders are positioned and activated in different directions. This asymmetric arrangement prevents accidental switching by making the switching action intentional and deliberate, thereby maintaining both versatility and convenience.
3Productivity
If an inflating device with large volume is used, then inflation capacity is improved, but resistance increases when the object is almost completely inflated
Solution Approach 1:
The device dynamically switches between large and small cylinder operation based on the inflation stage. The large cylinder provides high-capacity inflation when resistance is low, while the small cylinder takes over when resistance increases, optimizing the balance between inflation capacity and force requirements throughout the inflation process.
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 enables efficient inflation in both upward and downward directions, reducing resistance and improving usability by preventing accidental switching, thus enhancing the overall inflation process.
Implementation Method 1
at least one first check valve, a discharging hole, a second inlet, and a second check valve
Data Source
AI summary
The inflating device has a body, a large cylinder, a small cylinder, a handle, a switching mechanism, and a switching device. The large cylinder is mounted moveably in the body and has an upper input gap, an inner bottom base, and a bottom base. The upper input gap is defined between an outer surface of a bottom end of the large cylinder and an inner surface of a first chamber of the body. The bottom base is connected with the large cylinder, is located below the inner bottom base, and has a first annular holding recess and a first O-ring. The small cylinder is mounted moveably in a second chamber of the large cylinder and has a piston base. The handle is mounted on the top end of the small cylinder. The switching mechanism is mounted on the top end of the large cylinder.