Pull Handle Structure with 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 and secure locking system, where a carrier with a hole portion on a first object interacts with a corresponding limiting section on a second object, allowing effortless operation and quick locking/unlocking by pivoting the pull handle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If handles are directly provided on the outer side of objects without secure locking mechanism, then the structure is simple and easy to manufacture, but the handles are subjected to the risk of being wrongly operated
Solution Approach 1:
The handle is pre-configured with a limiting section that can engage with a corresponding limiting section on the carrier before the door is fully opened. This preliminary engagement action prevents the handle from being arbitrarily pulled or wrongly operated, as the limiting sections must be properly aligned and engaged for the door to open, thereby resolving the contradiction between reliability and structural simplicity.
2Reliability
If flush swing handles are pushed and flatly attached to the object when not in use, then the appearance is compact, but the handles still have the risk of being arbitrarily or wrongly pulled for use
Solution Approach 1:
The limiting section on the handle is designed to preliminarily engage with the corresponding limiting section on the carrier in a specific position. This preliminary action ensures that the handle can only be pulled for use when the door is properly aligned and the limiting sections are correctly positioned, preventing arbitrary or wrong operation while maintaining compact appearance when not in use.
Solution Approach 2:
The limiting sections act as intermediary elements between the handle and the carrier. These intermediary components mediate the interaction between the user's pulling action and the door opening action, ensuring that the handle can only be operated when the proper conditions are met, thus resolving the contradiction between secure locking and ease of operation.
3Force
If conventional handle designs are used, then the structure is simple, but a user has to apply a considerable force on the handle to connect or separate the object
Solution Approach 1:
The limiting sections are designed to preliminarily engage with each other in a specific position before full connection or separation is required. This preliminary engagement creates a mechanical advantage that reduces the force needed by the user to connect or separate the objects, as the limiting sections guide the motion and distribute the force more efficiently, resolving the contradiction between operation force and mechanism complexity.
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 secure locking and easy, convenient operation of the pull handle, reducing the risk of accidental use and minimizing the force required for object engagement and separation.
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, or the limiting section connects to, interferes with or engages with the carrier, wherein the carrier loads the pull handle by folding. 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.