Swing-Type Tricycle Integrated Gearbox and Transmission Assembly
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Solution Overview
Problem
Existing swing-type tricycles have complex transmission structures that are difficult to assemble, require a large packaging volume, and are challenging for consumers with poor hands-on ability due to the need for multiple components and adjustments during assembly.
Innovation Solution
The design features a compact transmission mechanism housed within a frame assembly, utilizing a gear box connected to a wheel frame with symmetrically arranged rear wheels and a universal shaft assembly for simplified assembly, reducing the need for external components and allowing pre-assembly before packaging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a multi-stage universal joint transmission structure is used to enable the front frame to swing, then the tricycle can turn corners more stably, but the transmission structure becomes complex and difficult to assemble
Solution Approach 1:
The patent combines the swinging mechanism and transmission mechanism into an integrated structure where the first transmission sprocket is directly connected to the swinging mechanism's rotating member. This merging eliminates the need for complex multi-stage universal joints while maintaining both cornering stability and transmission efficiency through a unified design
2Reliability
If multiple external transmission components are used for the swinging mechanism, then the transmission function is achieved, but the assembly process becomes complicated and requires adjustment
Solution Approach 1:
The patent segments the transmission system into a self-contained swinging mechanism module that includes all necessary transmission components integrated together. This modular segmentation allows the entire swinging and transmission system to be pre-assembled and tested as one unit, eliminating complex field assembly and adjustment requirements
Solution Approach 2:
The swinging mechanism and transmission components are pre-assembled and pre-adjusted during manufacturing to form an integrated unit. This preliminary action ensures that no further assembly or adjustment is needed by the end user, significantly simplifying the assembly process while maintaining reliable transmission function
3Strength
If the rear frame uses an integrated structure with large span, then the structural strength is sufficient, but the packaging volume increases and transportation cost rises
Solution Approach 1:
The rear frame is divided into separate modular components that can be disassembled into smaller parts for compact packaging. The segmentation maintains structural strength through proper connection designs while enabling reduced packaging volume and lower transportation costs
Data Source
AI summary
An easily-assembled swing-type tricycle, comprises a frame assembly, a wheel frame (4) arranged on the frame assembly, a transmission chamber arranged in the frame assembly and a transmission mechanism arranged in the transmission chamber; The frame assembly comprises a front frame (1), a swinging mechanism (3) and a gear box (2), the front frame (1) is connected to the gear box (2) through the swinging mechanism (3), and the gear box (2) is connected to the wheel frame (4). The transmission mechanism is arranged in the transmission chamber in the frame assembly, so that the transmission mechanism does not need to be mounted outside the frame, and the product is more compact in structure, the transmission mechanism can be pre-assembled in the transmission chamber before the product is packed and transported, reducing the assembly procedure by the consumer.