Remote Control Crawler Chassis Symmetric Swing Arm Design
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Solution Overview
Problem
Conventional toy crawler vehicle chassis designs with multiple link configurations experience quick wear and abrasion, stress concentration, and require expensive two-stage transmission axles due to non-symmetrical connection points, limiting durability and flexibility on uneven terrain.
Innovation Solution
A chassis structure featuring symmetrically mounted front and rear swing arm assemblies with pivotally connected swing arm seats, axles, and bridge swing arms, allowing for single-axis up and down or twisting swings, which maintains a constant distance between the differential and universal joint, enabling the use of a durable and cost-effective single-rod transmission axle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple link configuration with spherical joints is used, then the bridges can swing up and down to adapt to uneven terrain, but the link rods experience quick wear and abrasion and stress concentration
Solution Approach 1:
The chassis is divided into separate swing arm assemblies for each bridge, with each assembly independently capable of swinging. This segmentation allows each bridge to adapt to terrain independently without the mutual constraints of a multiple link configuration, reducing wear and stress concentration on individual components.
Solution Approach 2:
The swing arm assemblies are designed to be dynamically movable relative to the frame, allowing the bridges to swing up and down in response to terrain conditions. This dynamic capability enables terrain adaptation while the controlled movement reduces wear and stress on the swing arms and spherical joints.
2Adaptability or versatility
If multiple link configuration is used, then the bridges can twist and swing to maintain wheel contact with ground surface, but the connection points are not on the same axis requiring expensive two-stage transmission axles
Solution Approach 1:
The swing arm assemblies are positioned symmetrically on the frame, with connection points aligned on the same axis. This symmetric arrangement allows the bridges to twist and swing without requiring complex two-stage transmission axles, as the aligned connection points enable simpler single-rod transmission axles to maintain constant distance.
Solution Approach 2:
The swing arm assemblies serve multiple functions: they provide the swinging motion for terrain adaptation, maintain the alignment of connection points on the same axis, and enable the use of simpler transmission axles. This multi-functionality reduces the overall complexity of the transmission system while maintaining bridge swinging capability.
3Ease of operation
If multiple link configuration is used, then the bridges can swing to crawl on uneven ground, but the link rods mutually constrain each other limiting swing freedom
Solution Approach 1:
The invention extracts the mutual constraint relationship from the multiple link configuration by using separate swing arm assemblies for each bridge. Each swing arm assembly operates independently without being constrained by other link rods, allowing free swinging motion for each bridge while eliminating the complex inter-dependent link rod configuration.
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 single-axis swing mechanism reduces wear and enhances durability, stability, and control, while allowing for flexible terrain adaptation with a low-cost, high-durability transmission system.
Implementation Method 1
The axle hole receiving and combined therein with bearings
Implementation Method 2
the swing arm seat comprising pivotal coupling sections provided in radial directions on two opposite sides of the axle hole and each comprising a pivot connection hole formed therein to be pivotally connected to the frame by means of pivots
Implementation Method 3
the bridge swing arm has an end that is coupled, through an axle, in the axle hole of the swing arm seat
Implementation Method 4
the support arms each having an end forming a coupling section for coupling with the front and rear bridges
Data Source
AI summary
A chassis structure of a remote control crawler vehicle includes front and rear swing arm assemblies mounted symmetrically on a frame at two sides of a central separation driving box and respectively connected to front and rear bridges of the frame. The front and rear swing arm assemblies are each pivotally connected to the frame by means of a swing arm seat. The swing arm seat is formed with an axle hole extending in a vehicle body direction and having two ends each combined with a bearing for rotatably receiving and supporting a bridge swing arm. An opposite end of each bridge swing arm is mounted to the front and rear bridges so as to form a novel chassis structure of a remote control crawler vehicle. In this way, the front and rear bridges are allows to take up and down swings in a one-axis manner of movement.