Hub-Driven Integrated Wheel Layout for Quieter Children Vehicles
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Solution Overview
Problem
Existing children vehicle wheel structures are complex, bulky, heavy, and aesthetically unappealing due to a separate motor and gearbox design, which also generates noise during operation.
Innovation Solution
A hub-driven integrated wheel design featuring a gearbox with a gear transmission mechanism and a longitudinally assembled driving motor within a limit groove, reducing noise and improving aesthetics, while allowing for multi-stage speed-changing gears for stable and efficient transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the driving motor is placed horizontally on the gear fixing mechanism, then the drive system can be integrated into the hub, but the driving motor produces great noise when driving the gear transmission mechanism
Solution Approach 1:
The patent changes the mounting orientation of the driving motor from horizontal to vertical (longitudinal assembly). The driving motor is assembled in the limit groove along the width direction of the integrated wheel, with the driving shaft passing through the gear fixing upper cover. This dimensional change in motor orientation reduces noise while maintaining integration.
2Ease of manufacture
If rear wheels and the motor are separated with externally installed drive system, then the drive system can be installed, but the design becomes complex, bulky, heavy, and impacts aesthetics
Solution Approach 1:
The patent merges the driving motor, gear transmission mechanism, and hub into a single integrated unit. The motor is assembled in the limit groove of the hub, the gear transmission mechanism is assembled in the accommodating cavity formed by the gear fixing upper cover and lower cover, eliminating the need for separate external installation and reducing overall structural complexity.
3Object-generated harmful factors
If the driving motor is longitudinally assembled in the limit groove, then noise is reduced, but the motor positioning and connection requires precise alignment
Solution Approach 1:
The patent introduces a limit groove as an intermediary structure in the gear fixing upper cover to precisely position and constrain the driving motor. The limit groove provides a predefined path and positioning features that guide the motor into correct alignment, while the driving shaft passes through the groove to connect the motor to the gear transmission mechanism, facilitating precise alignment during assembly.
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 solution results in a simpler, more reliable, and quieter children vehicle wheel system with improved transmission efficiency and reduced noise, enabling direct integration with existing vehicle structures without modifications, enhancing both functionality and aesthetics.
Implementation Method 1
A gear transmission mechanism is assembled in the accommodating cavity. A limit groove is formed inside an outer side of the gear fixing upper cover along a width direction of the integrated wheel, and a driving motor is assembled in the limit groove. The driving motor is longitudinally assembled in the limit groove, and a driving shaft of the driving motor passes through the gear fixing upper cover and connects to a gear, and the gear is connected to the gear transmission mechanism.
Data Source
AI summary
A hub-driven integrated wheel for a children vehicle and an assembly method thereof are provided. The hub-driven integrated wheel includes a hub, a gearbox installed in the hub, and a tire is arranged on a periphery of an outer side of the hub. The gearbox is clamped to the hub to drive the integrated wheel to move. A limit groove is formed inside an outer side of a gear fixing upper cover along a width direction of the integrated wheel, and a driving motor is assembled in the limit groove. The driving motor is longitudinally assembled in the limit groove, and a driving shaft of the driving motor passes through the gear fixing upper cover and connects to a gear, and the gear is connected to a gear transmission mechanism.