Pull Handle Structure with Nested Lever Locking Mechanism
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Solution Overview
Problem
Existing handle structures lack secure locking mechanisms and labor-saving features, leading to accidental operation and requiring significant force for engagement and separation of objects.
Innovation Solution
A pull handle structure incorporating a lever mechanism with a limiting section that can be securely locked in a folded position and easily extended for use, featuring a carrier with a hole portion and a corresponding limiting section on the second object for effortless operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a handle is directly provided on the outer side of an object without secure locking mechanism, then the handle structure is simple and easy to manufacture, but the handle is subjected to the risk of being wrongly operated or undesirably moved
Solution Approach 1:
The pull handle is nested within a recessed cavity of the chassis cover, with a limiting section that fits into a corresponding recess on the chassis. When the handle is pushed inward, it becomes flush with or recessed into the cover surface, creating a compact nested structure that provides secure locking while maintaining simplicity.
Solution Approach 2:
The limiting section of the pull handle is preliminarily positioned within the recessed cavity, and the corresponding recess on the chassis is prepared in advance. This preliminary positioning ensures that when the handle is installed, it automatically engages with the chassis structure, providing secure locking without requiring additional complex mechanisms.
2Ease of operation
If a flush swing handle is pushed and flatly attached to the object when not in use, then the handle appearance is compact and neat, but the handle still has the risk of being arbitrarily or wrongly pulled for use and requires considerable force to connect or separate
Solution Approach 1:
The pull handle is designed as a movable component that can dynamically transition between extended and retracted positions. When pulled outward, the handle extends to facilitate easy separation; when pushed inward, it retracts to achieve secure locking. This dynamic design allows effortless operation while reducing the force required for connection and separation through the lever mechanism.
Solution Approach 2:
The limiting section acts as an intermediary between the pull handle and the chassis. It engages with the corresponding recess to transmit and amplify the user's pulling force through lever action, enabling effortless operation while maintaining secure locking when retracted.
3Object-affected harmful factors
If the handle is extended for use, then the handle can facilitate separation of objects, but the handle is exposed to risk of accidental operation when folded
Solution Approach 1:
The recessed cavity structure preliminarily prevents accidental operation by concealing the handle when not in use. The limiting section is preliminarily positioned within the recess, creating a locked state that requires deliberate user action to disengage. This preliminary anti-action reduces the risk of accidental operation while allowing quick unlocking when needed.
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 pull handle structure allows for secure locking and easy, quick operation, reducing the risk of accidental use and minimizing the force required for connecting or separating objects.
Implementation Method 1
the pull handle structure employs the lever principle, so that the handle being pivotally turned enables effortless connection and separation of the object with the handle to and from another object
Data Source
AI summary
A pull handle structure includes a carrier mounted on a first object, a pull handle movably assembled to the carrier, and a limiting section located on the pull handle for connecting to, interfering with or engaging with a second object. By operating the pull handle to move the carrier, the first object can be engaged with or separated from the second object. Therefore, the pull handle structure has the advantages of being securely lockable in place and operable in an easy, convenient, effortless and quick manner.