Snap-Engaged Car Body Structure for Fast, Load-Bearing Assembly
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Solution Overview
Problem
The assembly of a mobile robot's car body structure, which includes a load bearing structure connected to the main body structure via screws, is time-consuming.
Innovation Solution
The car body structure employs a snap-engagement mechanism using support rods that are snap-engaged with slots on the side plates, allowing for quick assembly and enhanced load bearing capacity, and includes a driving unit with a swing arm assembly to adapt to different terrains, improving stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the load bearing structure is connected with the main body structure through a number of screws, then the connection strength is improved, but the assembly time is increased
Solution Approach 1:
The connection structure is divided into a snap engagement portion and a screw fixation portion. The snap engagement portion (elastic component with hook) provides immediate mechanical connection, while the screw fixation portion reinforces the connection. This segmentation allows the assembly to benefit from both quick snap connection and strong screw fixation without requiring screws for the entire connection process.
Solution Approach 2:
The elastic component with hook is pre-installed on the support rod before final assembly. This preliminary snap engagement establishes the basic connection structure, allowing the load bearing structure to be quickly positioned and preliminarily secured to the main body structure before any screw fixation is applied, significantly reducing assembly time.
2Productivity
If the snap-engagement mechanism is used for quick assembly, then the assembly efficiency is improved, but the load bearing capacity may be reduced
Solution Approach 1:
The patent merges two connection mechanisms into a single hybrid system: the snap engagement mechanism (elastic component with hook) provides quick assembly, while the screw fixation mechanism (screws threaded into the support rod) provides enhanced load bearing capacity. Both mechanisms work together simultaneously to achieve both quick assembly and high strength connection.
Solution Approach 2:
The connection system uses a composite approach combining two different connection methods (snap engagement and screw fixation) rather than relying on a single mechanism. This composite connection system leverages the advantages of both mechanisms - the speed of snap engagement and the strength of screw fixation - to resolve the contradiction between assembly efficiency and load bearing capacity.
Data Source
AI summary
A car body structure includes a bottom plate, a side plate assembly, and a support rod assembly. The side plate assembly includes a first side plate and a second side plate opposite to the first side plate. The first side plate and the second plate are connected to the bottom plate and located on a same side of the bottom plate. An edge of the first side plate facing away from the bottom plate defines at least two first slots, and an edge of the second side plate facing away from the bottom plate defines at least two second slots. The support rod assembly includes at least two support rods, each support rod is snap-engaged with one first slot and one second slot. A surface of the support rod assembly facing away from the bottom plate is a bearing surface. A driving unit is also disclosed.