Armrest mounting units, handcarts and seat components
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Solution Overview
Problem
Current handcarts, such as strollers or nursing carriers, face challenges in accurately positioning and easily mounting/removing armrests due to the need for precise locking and overcoming locked forces, making the process inconvenient.
Innovation Solution
An armrest mounting unit with a fixed base, connecting base, first magnetic member, and a locking mechanism that includes an unlocking member, engaging member, and second magnetic member, allowing for magnetic assistance in positioning and separation, and a rotatable member with magnetic poles to facilitate quick locking and unlocking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a locking mechanism is used to securely connect the armrest body to the frame, then the connection strength is improved, but the ease of operation deteriorates because additional force is required to overcome the locked force during removal
Solution Approach 1:
The patent replaces part of the mechanical locking system with a magnetic field system. The first magnetic member on the armrest body interacts with the second magnetic member on the frame to provide automatic positioning and assistance during mounting and removal, reducing the mechanical force needed while maintaining secure connection when locked
2Reliability
If accurate positioning is required to lock the armrest body to the frame, then the reliability of connection is improved, but the ease of operation deteriorates because precise alignment is difficult to achieve
Solution Approach 1:
The magnetic interaction between the first and second magnetic members provides automatic positioning assistance. The magnetic attraction guides the armrest body into correct alignment with the frame during mounting, eliminating the need for manual precise positioning while ensuring reliable connection
Solution Approach 2:
The magnetic positioning system enables the armrest body to self-align with the frame through magnetic attraction. The system performs the positioning function automatically without requiring user skill or effort to achieve accurate alignment
3Stability of the object's composition
If a locked force is applied to secure the armrest body, then the stability of connection is improved, but the ease of operation deteriorates because the locked force must be overcome during removal
Solution Approach 1:
The magnetic field replaces part of the mechanical locking force. The second magnetic member on the frame and first magnetic member on the armrest body create magnetic attraction that provides secure connection while allowing easier separation when the locking mechanism is disengaged, as magnetic force can be quickly neutralized
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
Enables quick and convenient mounting and removal of the armrest body from the frame without requiring excessive manual force, improving user experience by automating the positioning and separation process.
Implementation Method 1
The first magnetic member forms a magnetic action with the locking mechanism, to assist positioning and separation of the fixed base and the connecting base
Implementation Method 2
a second magnetic member movably disposed on the connecting base, and forms a magnetic action with the first magnetic member
Implementation Method 3
The second magnetic member includes two ends serving as a first magnetic pole and a second magnetic pole respectively. When the rotatable member is in the first rotation position, the first magnetic pole and the first magnetic member face and attract each other. When the rotatable member is in the second rotation position, the second magnetic pole and the first magnetic member face and repel each other
Data Source
AI summary
The present disclosure discloses an armrest mounting unit and a handcart. The armrest mounting unit includes: a fixed base; a connecting base; a first magnetic member fixed on one of the fixed base and the connecting base; and a locking mechanism disposed on the other one of the fixed base and the connecting base. When the locking mechanism is in a locked state, the connecting base is fixable on the fixed base through the locking mechanism. When the locking mechanism is in an unlocked state, the connecting base is separable from the fixed base. The first magnetic member forms a magnetic action with the locking mechanism, to assist positioning and separation of the fixed base and the connecting base.