Foldable Pushcart Multi-Section Adjustable Backrest
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Solution Overview
Problem
Existing foldable pushcarts primarily serve the purpose of transporting goods but lack versatility and comfort for users, especially during outdoor activities like camping.
Innovation Solution
A foldable pushcart with a multi-section adjustable backrest, integrated side walls, seat pads, and a movable pad, allowing the cart to function as a comfortable riding tool, a sleeping bed, and a versatile storage solution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the pushcart is designed with integrated side walls, backrests, and seat pads, then the versatility and comfort for users is improved, but the device complexity increases
Solution Approach 1:
The patent integrates side walls, backrests, and seat pads into a unified vehicle body structure. The backrest includes first and second backrests symmetrically arranged, connected to corresponding seat pads, forming an integrated assembly that provides both structural support and multiple functions (transport, seating, sleeping) without requiring separate components.
Solution Approach 2:
The pushcart is designed to serve multiple purposes: transporting goods using the base seat, providing seating comfort with integrated seat pads and backrests, and enabling users to lie down and rest by adjusting the backrests to horizontal position. This multi-functionality resolves the contradiction by making one device perform various roles.
2Adaptability or versatility
If the backrest is made adjustable in height and angle, then the comfort and adaptability for different user needs is improved, but the mechanism complexity increases
Solution Approach 1:
The backrest is designed with dynamic adjustment capabilities through rotatable support rods that allow the backrest to change from vertical to tilted to horizontal positions. The height adjusting unit with connecting ropes and buckles enables dynamic height modification. This dynamic design allows the backrest to adapt to different user needs while using relatively simple mechanical mechanisms.
Solution Approach 2:
The backrest is divided into multiple sections including first and second backrests, each with independent adjustment capabilities. The height adjusting unit is segmented into connecting ropes, buckles, and rotating shafts, allowing independent adjustment of different parts to achieve various configurations without requiring complex integrated mechanisms.
3Ease of operation
If the pushcart includes a movable pad and accommodating cavity, then the comfort for sitting and lying down is improved, but the structural complexity increases
Solution Approach 1:
The movable pad is positioned within the vehicle body structure, and the accommodating cavity is integrated into the base seat. When the backrest is in vertical position, the accommodating cavity serves as storage space. When the backrest is adjusted to horizontal position for lying down, the movable pad and accommodating cavity work together to provide comfortable support, nesting multiple functions within the same structural space.
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 pushcart effectively maximizes user utility by providing a comfortable seating and resting solution during camping, while also serving as a practical tool for transporting goods, and can be easily folded and stored.
Implementation Method 1
a spring integrally arranged; the movable end is located inside the fixed end; and the spring is clamped between the movable end and the fixed end
Implementation Method 2
a rotatable support rod is symmetrically arranged on the frame; both ends of the support rod are rotatably connected with the base seat
Implementation Method 3
a foldable frame, wheels fixedly arranged below the frame
Data Source
AI summary
A foldable pushcart with a multi-section adjustable backrest comprising, a foldable frame, wheels fixedly arranged below the frame, and a vehicle body fixedly arranged on the frame; wherein, the vehicle body comprises side walls, backrests and seat pads integrated; the backrest comprises a first backrest and a second backrest arranged symmetrically; the seat pad comprises a first seat pad connected with the first backrest and a second seat pad connected with the second backrest; a movable pad connected with the first seat pad is arranged between the first seat pad and the second seat pad; an accommodating cavity is provided below the movable pad; a rotatable support rod is symmetrically arranged on the frame; both ends of the support rod are rotatably connected with the base seat; a backrest is sleeved on the support rod; and the backrest is provided thereon with a height adjusting unit.