Foldable Cart Frame With Sliding Collapse and Load-Balancing Support
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Solution Overview
Problem
Existing foldable cart frames have complex collapsing mechanisms that require substantial effort and time for expansion and collapse, often leading to jamming or misalignment, and lack effective load-bearing designs, compromising stability and durability.
Innovation Solution
A foldable cart frame design featuring a front and rear frame mechanism, a collapsing mechanism, a foldable upper connection frame, and a foldable lower support frame, with cross-arranged folding arms and locking mechanisms for smooth operation, ensuring balanced load distribution and quick, secure fixation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional collapsing mechanisms are used, then the cart frame can be folded, but the operation becomes complex and time-consuming with jamming or misalignment issues
Solution Approach 1:
The cart frame is divided into multiple independent connecting members (first upper connecting members, first lower connecting members, second upper connecting members, second lower connecting members) that can move relative to each other. Each member is segmented with specific connecting portions that allow independent rotation and sliding, enabling simplified collapse operation without complex coordinated movements.
Solution Approach 2:
The connecting members are designed with dynamic characteristics - rear ends of first upper connecting members and front ends of foldable upper connection frames are rotatably connected, while collapsing mechanisms are slidably connected. This combination of rotational and sliding dynamics allows smooth collapse and expansion operations without jamming or misalignment.
2Stability of the object's composition
If traditional load-bearing structures are used, then the cart frame is simple, but stability under heavy loads deteriorates
Solution Approach 1:
The load-bearing structure is segmented into multiple connecting members distributed at different positions (upper and lower connecting members at front and rear frame mechanisms). This segmentation allows weight pressure to be distributed across multiple points and members, enhancing load-bearing stability without requiring a monolithic complex structure.
Solution Approach 2:
Multiple connecting members are merged into an integrated load-bearing system where first upper connecting members, first lower connecting members, second upper connecting members, and second lower connecting members work together. The foldable upper connection frame and foldable lower support frame connect these members, creating a unified structure that effectively distributes and bears heavy loads.
3Productivity
If rapid deployment is achieved through simple mechanisms, then operation speed improves, but structural integrity and load distribution deteriorate
Solution Approach 1:
The frame is segmented into multiple independently movable connecting members that can quickly deploy through simple rotational and sliding actions. Despite the simplicity of individual member movements, the segmented structure maintains structural integrity because each member is designed with specific connecting portions that ensure proper alignment and load distribution during rapid deployment.
Solution Approach 2:
The dynamic design allows rapid deployment through rotatable and slidable connections. The rotatable connections at upper members and slidable connections at collapsing mechanisms enable quick movement, while the dynamic structure maintains strength by allowing controlled motion that preserves structural integrity during the deployment process.
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 design enables convenient and rapid deployment and storage, enhances stability under heavy loads, and maintains structural integrity through balanced force distribution and secure locking, improving user experience and longevity.
Implementation Method 1
front ends of the foldable lower support frame are rotatably connected to the two first lower connecting members
Implementation Method 2
upper ends of the collapsing mechanisms slide along the foldable upper connection frames
Implementation Method 3
upper ends of the left folding arm and an upper end of the right folding arm are slidably connected to the foldable upper connection frame via the locking mechanism
Data Source
AI summary
The present invention discloses a foldable cart frame, comprising a front frame mechanism, a rear frame mechanism, a collapsing mechanism, a foldable upper connection frame, and a foldable lower support frame; when the front frame mechanism and the rear frame mechanism are pushed to collapse or expand, the foldable upper connection frame and the foldable lower support frame rotate to fold or unfold accordingly, an upper end of the collapsing mechanism slides along the foldable upper connection frame, a lower end of the collapsing mechanism slides along the front frame mechanism and the rear frame mechanism to collapse or expand, thereby completing the collapsing and expanding of the entire cart frame.