Refrigerator Door Handle Locking Structure for Secure Fast Assembly
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Solution Overview
Problem
Existing refrigerator door handle attachment methods are inefficient, leading to loose handles and increased risk of breakage due to complex structures and improper fixation, making it difficult to open and close doors securely.
Innovation Solution
A refrigerator door handle coupling structure featuring a detachment preventing part with an inclined surface that securely locks with a handle fixing part, enhancing contact area and stability, and a movement restricting part to prevent handle detachment, allowing for easier assembly and secure fixation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the door handle is attached using a complex structure and inefficient assembling method, then the attachment strength may be improved, but the assembling efficiency deteriorates
Solution Approach 1:
The door handle attachment structure is divided into separate components: a handle fixing part attached to the door and a detachment preventing part attached to the door handle. This segmentation allows each part to be manufactured and assembled independently, improving assembling efficiency while maintaining attachment strength through the interlocking relationship between the segmented parts.
Solution Approach 2:
The detachment preventing part is inserted into the handle fixing part, creating a nested structure where one component fits within another. This nesting approach simplifies the overall assembly process and reduces the number of separate attachment operations needed, thereby improving assembling efficiency without compromising the strength of the connection.
2Stability of the object's composition
If the door handle is firmly fixed to the door, then the stability is improved, but the device complexity increases
Solution Approach 1:
By dividing the attachment system into a handle fixing part and a detachment preventing part, the structure achieves stability through functional segmentation rather than complex monolithic design. Each segmented part has a specific function that contributes to overall stability while keeping individual components simple.
Solution Approach 2:
The detachment preventing part acts as an intermediary element that mediates between the door handle and the door. It provides the necessary stability and prevention of detachment through its geometric shape and insertion mechanism, avoiding the need for complex fastening systems while maintaining firm fixation.
3Device complexity
If the door handle is not firmly fixed to the door, then the device complexity is reduced, but the reliability deteriorates due to handle movement and breakage risk
Solution Approach 1:
The nested structure where the detachment preventing part is inserted into the handle fixing part provides reliable fixation with minimal complexity. The insertion creates a secure fit that prevents handle movement and detachment, improving reliability through the geometric interlocking of nested components rather than complex fastening mechanisms.
Solution Approach 2:
The detachment preventing part's geometric shape allows it to automatically lock into the handle fixing part through its own structure, without requiring additional fasteners or complex assembly steps. This self-service mechanism ensures reliable attachment while keeping the overall device complexity low.
4Strength
If the contact area between the detachment preventing part and handle fixing part is increased, then the attachment strength is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The detachment preventing part features an inclined surface with curved geometry that naturally increases the contact area with the handle fixing part. The curved surface distributes contact forces over a larger area, improving attachment strength while the geometry itself provides tolerance to manufacturing variations, reducing the stringency of precision requirements.
Solution Approach 2:
By changing the geometric parameters of the detachment preventing part, specifically introducing an inclined surface, the contact area with the handle fixing part is increased. This parameter change improves attachment strength through enhanced surface contact while the inclined geometry provides self-aligning characteristics that reduce the impact of manufacturing tolerances.
Data Source
AI summary
Provided is a refrigerator and a refrigerator door. The refrigerator includes a main body configured to form a storage space, a door configured to selectively open and close the storage space, handle fixing parts coupled to the door and protruding from the door, a door handle disposed at the door and configured to be grasped by a user for opening and closing the door, holders disposed at both sides of the door handle for receiving the handle fixing parts, and a detachment preventing part. The detachment preventing part is coupled to a side of the holder at an acute angle with a front surface of the door and is configured to be locked by the handle fixing part for fixing the door handle. The door handle can be attached to the door more easily and firmly.