Ratchet Telescopic Strut With Spring Pre-Abutment Against Loosening
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Solution Overview
Problem
Conventional telescopic struts are labor-intensive to install and adjust, prone to loosening due to vibrations, and often require two persons to operate, making them inconvenient and potentially dangerous.
Innovation Solution
A telescopic strut design featuring a ratchet-based mechanism with a lever, internal and external tubes with teeth, and a pre-abutment mechanism using a spring to ensure firm contact with container walls, allowing for one-handed operation and secure adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a ratchet-based mechanism is used to extend the internal tube from the external tube, then the telescopic strut can be securely extended and restrained against vibration, but the device complexity increases due to the additional mechanism components
Solution Approach 1:
The ratchet-based mechanism automatically maintains the extended position of the internal tube without requiring continuous manual intervention. The teeth on the internal tube engage with the ratchet mechanism to prevent backward movement, allowing the system to self-maintain its extended state while resisting vibrational loosening.
2Productivity
If manual rotation is used to withdraw or extend the internal tube, then the telescopic strut can be installed, but labor and time are wasted
Solution Approach 1:
The telescopic strut employs a dynamic extension mechanism where the internal tube can be extended or withdrawn by pushing or pulling the contact element, rather than requiring manual rotation. This dynamic linear motion significantly reduces installation time and labor compared to rotational adjustment methods.
3Reliability
If a pre-abutment mechanism with spring is used to ensure firm contact with container walls, then the reliability of restraint is improved, but the device complexity and manufacturing cost increase
Solution Approach 1:
The pre-abutment mechanism incorporates a spring that exerts a counteracting force to ensure the contact element maintains firm contact with the container wall. This spring force compensates for any loosening tendencies and ensures reliable restraint, effectively counterbalancing the forces that might cause the strut to detach.
4Ease of operation
If the telescopic strut is designed for one-handed operation, then ease of operation is improved, but the mechanism complexity increases
Solution Approach 1:
The telescopic strut design extracts the adjustment function from complex two-handed operations to a simplified one-handed operation. The contact element can be pushed or pulled by a single hand to extend or retract the internal tube, eliminating the need for manual rotation or complex lever operations that require both hands.
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 design enables efficient, one-handed installation and adjustment of the telescopic strut, providing secure restraint of goods in containers without the risk of accidental drops or loosening due to vibrations.
Implementation Method 1
a spring tending to extend the first tube from the second tube
Data Source
AI summary
A telescopic strut includes an external tube, a ratchet-based mechanism securely connected to the external tube, an internal tube movably inserted in the external tube through the ratchet-based mechanism, teeth formed on the internal tube and engageable with the ratchet-based mechanism, a lever pivotable to operate the ratchet-based mechanism to extend the internal tube from the external tube, a first contact element for contact with a first portion of a container, and a second contact element connected to the internal tube and operable for contact with a second portion of the container. A pre-abutment mechanism is arranged between the external tube and the first contact element. The pre-abutment mechanism includes a first tube connected to the external tube, a second tube telescopically connected to first tube, and a spring tending to extend the first tube from the second tube.