Dual-Motor Inflatable Pump Core for High-Pressure Tire Inflation
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Solution Overview
Problem
Conventional electric inflatable pumps with single electric motors are insufficient in meeting the high output power and high inflation speed requirements for larger volume and high-pressure tires, particularly for off-road vehicles, due to cost constraints and performance limitations.
Innovation Solution
A dual-motor-driven inflatable pump core design that utilizes two electric motors to drive a piston rod reciprocatingly through a drive wheel set, achieving higher output power and inflation speed while maintaining cost-effectiveness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a single electric motor is used to drive the inflatable pump, then the device maintains portability and storage advantages, but the output power and inflation speed are insufficient for large volume and high-pressure tires
Solution Approach 1:
The single motor system is segmented into two separate electric motors (first and second motors), each driving its own piston rod through separate drive mechanisms. This segmentation allows each motor to operate independently, collectively delivering higher output power while maintaining manageable individual motor sizes that preserve portability advantages.
Solution Approach 2:
Two electric motor systems are merged into a single integrated pump structure, sharing common components such as the base, receiving space, and control circuitry. The merged system achieves cumulative power output sufficient for high-pressure tire inflation while consolidating control mechanisms to minimize operational complexity.
2Productivity
If an electric motor with larger output power is used to meet high inflation speed requirements, then the inflation performance improves, but the cost increases several times compared to common motors
Solution Approach 1:
The high-power requirement is segmented across two standard-rated motors rather than using one oversized motor. Each motor operates at or near its optimal power rating, achieving the required cumulative output power through additive effect. This segmentation allows selection of cost-effective standard motors while meeting the overall productivity requirements for high-speed inflation.
Solution Approach 2:
The system changes the operational parameters by running two motors simultaneously with coordinated control, rather than relying on a single motor operating beyond its optimal range. This parameter change enables the use of standard motors with lower individual power ratings, significantly reducing cost while maintaining high inflation speed through combined output.
3Power
If a dual-motor system is implemented to achieve high output power, then the inflation performance for off-road vehicle tires is satisfied, but the device complexity and structural requirements increase
Solution Approach 1:
Two independent motor-drive mechanisms are merged into a shared structural framework, with both motors mounted on a common base and both piston rods operating within a unified pump housing. This merging consolidates support structures, mounting points, and control systems, reducing the structural complexity that would otherwise result from completely separate dual-pump configurations.
Solution Approach 2:
The base structure serves multiple functions: providing mounting surfaces for both motors, housing the receiving space for both drive mechanisms, and supporting the overall assembly. This multi-functionality reduces the need for additional structural components, maintaining structural efficiency despite the dual-motor configuration.
4Speed
If two electric motors are used to drive the piston rod reciprocatingly, then the inflation speed and output power are significantly improved, but the control and coordination between motors become more difficult
Solution Approach 1:
A control circuitry system monitors the operational status of both motors and adjusts their operation accordingly. The feedback mechanism detects motor speed, position, and load conditions, automatically coordinating the reciprocating motion of both piston rods to ensure synchronized operation. This feedback control simplifies the coordination task, making the dual-motor system as easy to operate as a single motor while achieving doubled inflation speed.
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 dual-motor-driven design effectively meets the demands of high output power and high inflation speed for large volume and high-pressure tires, improving performance while controlling costs, thus enhancing the competitiveness of electric inflatable pumps.
Implementation Method 1
two electric motors disposed on the assembly portion of the base, and each having a drive shaft extended in the receiving space
Implementation Method 2
The drive wheel set is disposed in the receiving space of the base and has a driven gear and two drive gears engaging with the driven gear
Implementation Method 3
The piston rod is disposed in the cylinder body and extends in the receiving space via the fixing portion
Data Source
AI summary
A core of a dual-motor-driven inflatable pump has a base, a cylinder, two electric motors, and a drive wheel set. The base has an assembly portion, a fixing portion, and a receiving space formed between the assembly portion and the fixing portion. The cylinder is disposed on the base and has a cylinder body, a cylinder head, and a piston rod. The cylinder body is disposed on the fixing portion via the cylinder head. The piston rod is disposed in the cylinder body and extends in the receiving space via the fixing portion. The two electric motors are disposed on the assembly portion of the base, and each has a drive shaft extended in the receiving space. The drive wheel set is disposed in the receiving space of the base and has a driven gear and two drive gears engaging with the driven gear.