Rotating Drawer Lock Assembly for Accidental Opening Prevention
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Solution Overview
Problem
Kitchen appliances with drawers, such as microwave ovens and dishwashers, pose safety risks when installed in mobile environments due to inertia or uneven terrain causing accidental opening, and are also a hazard for children who can easily open them, leading to potential injuries.
Innovation Solution
A position-limiting lock assembly is integrated into the kitchen appliance, where one end of the lock is rotatably connected to the body and the other end protrudes to lock the drawer in place, preventing it from being drawn out, and can be rotated to unlock it when needed, ensuring the drawer remains closed during movement and use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the drawer is made easily accessible for normal use, then ease of operation is improved, but safety risks increase due to accidental opening from inertia or children
Solution Approach 1:
A lock assembly acts as an intermediary mechanism between the drawer and the user. The lock includes a blocking element that can be positioned to prevent drawer opening, and a control element that allows authorized users to unlock and open the drawer. This intermediary mechanism resolves the contradiction by filtering out accidental opening forces while permitting intentional opening actions.
Solution Approach 2:
The lock assembly transitions between different states: locked state where the blocking element prevents drawer movement, and unlocked state where the drawer can be opened normally. The dynamic switching between these states allows the system to adapt to different operational requirements, providing safety during transport/movement and accessibility during normal use.
2Object-affected harmful factors
If a lock assembly is added to prevent accidental opening, then safety is improved, but device complexity increases
Solution Approach 1:
The lock assembly is designed to be automatically engaged when the drawer is pushed in, without requiring separate locking actions. The blocking element automatically positions itself to prevent opening, and the control element automatically disengages the lock when the drawer is pulled. This self-service mechanism reduces operational complexity while maintaining safety functionality.
Solution Approach 2:
The lock assembly integrates multiple functions into a single compact structure: the blocking element for preventing opening, the control element for unlocking, and the connection to the drawer front panel. By merging these components into one integrated assembly, the design minimizes the increase in device complexity while achieving the safety objective.
3Reliability
If the lock is positioned to effectively block the drawer, then locking reliability is improved, but ease of operation worsens due to harder unlocking
Solution Approach 1:
The locking mechanism is segmented into distinct functional elements: the blocking element that provides the mechanical lock, the control element that users interact with for unlocking, and the connection element that links them. This segmentation allows the blocking element to be positioned optimally for reliable locking while the control element remains accessible and easy to operate for unlocking.
Solution Approach 2:
The control element serves as an intermediary that translates user input into the disengagement of the blocking element. Users interact with the control element (which can be positioned ergonomically) rather than directly manipulating the blocking element itself, making the unlocking process easy while maintaining the reliability of the blocking mechanism.
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 lock assembly effectively prevents the drawer from opening due to external factors like inertia or road unevenness and safeguards against children opening it, enhancing safety by maintaining the contents inside and preventing injuries.
Implementation Method 1
the other end of the lock can rotate to a position in front of the drawer face such that the drawer is restrained from being drawn out of the accommodation cavity
Implementation Method 2
one end of the lock is rotatably connected to the body
Data Source
Figure 1
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AI summary
The invention provides a kitchen appliance with a drawer. The kitchen appliance comprises a body, the drawer and a position-limiting lock assembly. The body comprises an accommodation cavity of which the front end is provided with an opening. The drawer is located in the accommodation cavity, a drawer face is fixedly connected to a front end of the drawer, and the drawer face can drive the drawer to move relative to the body, so as to draw the drawer out of or push the drawer into the accommodation cavity. The position-limiting lock assembly is mounted above the accommodation cavity, and comprises a lock. One end of the lock is rotatably connected to the body, and the other end of the lock protrudes from the front opening of the body. The other end of the lock can rotate to a position in front of the drawer face such that the drawer is restrained from being drawn out of the accommodation cavity, and the other end of the lock can be rotated away from a position in front of the drawer face such that the drawer is able to be drawn out of the accommodation cavity. According to the kitchen appliance with a drawer of the present invention, when the other end of the lock rotates to a position in front of the drawer face, the drawer face is locked, thereby preventing the drawer from being opened in mobile environments, and preventing children from opening the drawer and exposing themselves to danger.