Telescopic Rod Locking Mechanism for Quick, Intentional Adjustment
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Solution Overview
Problem
Conventional telescopic rod devices are inconvenient for quick adjustment due to a complex structure that can be unintentionally operated and requires significant strength to deform the resilient member, making them difficult to manufacture and use effectively.
Innovation Solution
A telescopic rod device with an outer tube, inner tube, actuator unit, and adjustment control unit, featuring adjustment holes, an actuator unit with inclined slide surfaces, and a resilient member that biases a lug to engage or disengage from these holes, allowing for easy length adjustment without accidental operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the control member is sleeved over the first rod member to allow operation, then the telescopic rod device can be adjusted, but it can be unintentionally operated
Solution Approach 1:
The patent introduces a button as an intermediary component between the operator and the positioning member. The button must be deliberately pressed to compress the resilient member and release the positioning member from the positioning hole. This intermediary mechanism prevents accidental operation while maintaining ease of intentional adjustment.
2Ease of operation
If the resilient member is designed to bias the positioning member, then the positioning member can be released, but significant strength is required to deform the resilient member
Solution Approach 1:
The button serves as a force amplification intermediary. By pressing the button, the operator applies force locally to compress the resilient member, which then releases the positioning member. This mechanism reduces the overall force required compared to directly deforming the resilient member without the button assistance.
3Reliability
If the telescopic rod device has a complicated structure for positioning and control, then it can be precisely controlled, but it is difficult to manufacture and assemble
Solution Approach 1:
The patent divides the control mechanism into distinct functional segments: the button for operation initiation, the resilient member for force storage and release, and the positioning member for engagement and disengagement. This segmentation allows each component to be manufactured and assembled independently, simplifying the overall manufacturing process while maintaining precise positioning control.
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 device enables quick and safe length adjustment with a simpler structure, preventing accidental operation and reducing the need for excessive strength, thus improving usability and safety.
Implementation Method 1
The resilient member constantly biases the lug to extend out of the through hole of the inner tube and engage one of the adjustment holes
Data Source
AI summary
A telescopic rod device includes an outer tube including adjustment holes, an inner tube having a through hole, an actuator unit mounted inside the inner tube and has an actuating portion, and an adjustment control unit having a restraining member that has a restraining portion, a resilient member, and a lug connected with the resilient member and protruding from the through hole to engage with an adjustment hole. The resilient member biases the lug to extend out of the through hole and engage an adjustment hole, and when the actuator unit moves relative to the inner tube, the actuating portion of the actuator unit actuates movement of the restraining portion, and the restraining member acts on the resilient member so that the lug disengages the adjustment hole.