Storable Pull Handle Assembly for Space-Saving Cart Operation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Carts with conventional handle assemblies occupy excessive space and hinder user operations, particularly when carrying infants or cargo, due to their fixed, extended positions.
Innovation Solution
A pull handle assembly for carts that can be moved between a stored position below the frame and an extended position, featuring a guide rail, slide block, and pivot connection, allowing adjustable pivot angles and a locking mechanism to enhance stability and convenience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the handle assembly is located above the frame in a fixed extended position, then the user can easily pull and control the cart, but the cart occupies excessive space and hinders user operations when carrying infants or cargo
Solution Approach 1:
The patent applies the dynamics principle by transforming the fixed handle assembly into a movable one that can switch between extended and retracted positions. The guide rail and slide block mechanism enables the handle to move dynamically along the rail, allowing it to extend when pulling is needed and retract when space is needed, thus resolving the contradiction between ease of operation and space occupation
Solution Approach 2:
The handle assembly is segmented into movable components including the slide block, guide rail, and pivot connection elements. This segmentation allows the handle to be divided into functional parts that can move independently relative to each other, enabling the extension and retraction motion while maintaining structural integrity
2Stability of the object's composition
If the handle assembly is fixed in an extended position, then the cart structure is simple and stable, but it hinders user interaction with infants or cargo handling
Solution Approach 1:
The patent implements dynamics by creating a handle assembly that can transition between fixed and movable states. The locking mechanism allows the handle to be secured in an extended position for stability during pulling, while also allowing it to be retracted to provide clear access for user interaction with infants or cargo, thus resolving the contradiction between structural stability and ease of operation
3Area of stationary object
If the handle assembly is made movable between stored and extended positions, then the space occupied by cart is reduced and user interaction is facilitated, but the device complexity increases due to guide rail, slide block, and pivot connection mechanisms
Solution Approach 1:
The patent applies dynamics by implementing a movable handle assembly that can transition between extended and retracted positions along a guide rail. This dynamic capability allows the cart to occupy minimal space when the handle is retracted while still providing full pulling functionality when extended, directly addressing the space reduction requirement despite the added mechanical complexity
4Adaptability or versatility
If the handle assembly is made movable with pivot connection, then the adaptability and versatility of cart is improved, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent implements dynamics through the pivot connection mechanism that enables the rod part to rotate relative to the slide block at multiple pivot angles. This dynamic adjustment capability allows the handle to be positioned at optimal angles for different pulling conditions and user preferences, enhancing adaptability and versatility while managing the inherent complexity through a well-defined mechanical joint
Solution Approach 2:
The pivot connection is segmented into distinct components including the first pivot part on the slide block, the second pivot part on the rod part, and the locking gear mechanism. This segmentation allows each component to perform its specific function independently, making the complex pivot mechanism more manageable in terms of manufacturing and assembly while maintaining the desired adaptability
Data Source
AI summary
A cart having a storable pull handle assembly and a pull handle assembly for a cart. In an embodiment, the cart includes having a frame, and the pull handle assembly includes a guide rail extending in a traveling direction of the frame and provided below the frame; a slide block slidably provided on the guide rail; and a pull handle movable between a stored position below the frame and an extended position where the pull handle is grasped by a user for pulling the cart. The pull handle includes a rod part and a grip part provided at a first end of the grip part, and a second end of the grip part is pivotally connected to the slide block.