One-Step Locking Stand Linkage for Multi-Section Leg Release
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Solution Overview
Problem
Existing photography stands with transmission components for simultaneous locking and releasing have complex structures and high production costs, yet they are not efficient.
Innovation Solution
A one-step locking stand with a fixing portion, supporting legs, and transmission assemblies that allow for quick and easy locking and releasing of all sections through a single operation, utilizing a first and second locking assembly driven by an operating assembly via a first and second transmission assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If transmission components are added to achieve simultaneous locking and releasing of all joints, then the efficiency of locking and releasing is improved, but the device complexity and production cost increase
Solution Approach 1:
The transmission system is divided into two independent assemblies: a first transmission assembly connected to the operating assembly that drives the first locking assembly, and a second transmission assembly connected to the first locking assembly that drives the second locking assembly. This segmentation allows each assembly to be simpler and more manageable while achieving the overall function of simultaneous locking and releasing of all sections.
Solution Approach 2:
The first locking assembly is pre-positioned to lock the first section relative to the second section, and the second locking assembly is pre-positioned to lock the third section relative to the second section. When the operating assembly is operated, both locking assemblies are simultaneously actuated through their respective transmission assemblies, achieving preliminary locking action across all joints before the stand is fully deployed or collapsed.
2Volume of moving object
If multiple joints are interconnected to reduce stand volume for storage, then the portability is improved, but the number of operations required to lock and release each joint increases
Solution Approach 1:
The operating assembly serves as a universal control mechanism that simultaneously controls multiple locking assemblies through the transmission assemblies. A single operation of the operating assembly performs the function of locking or releasing all sections, making the system multi-functional and eliminating the need for separate operations at each joint.
Solution Approach 2:
The transmission assemblies act as intermediaries that transfer the mechanical action from the operating assembly to the locking assemblies. The first transmission assembly mediates between the operating assembly and the first locking assembly, while the second transmission assembly mediates between the first locking assembly and the second locking assembly, enabling coordinated control of all joints through a single input.
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 stand achieves simple, user-friendly, and efficient one-step locking and releasing of all sections, reducing complexity and production costs while maintaining stability and ease of use.
Implementation Method 1
a hollow screw mounted around one end of the driving rod away from the operating assembly and connected to the first locking assembly; and a fixing nut threadedly connected to an outer periphery of the hollow screw, wherein the operating assembly is configured to drive the driving rod to rotate axially, and when the driving rod rotates, the hollow screw moves axially under joint action of the driving rod and the fixing nut
Data Source
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AI summary
A stand includes a fixing portion and at least one supporting leg connected to the fixing portion. The supporting leg includes first, second, and third sections; an operating assembly arranged at one of the sections; a first transmission assembly connected to the operating assembly; a first locking assembly fixedly arranged at the second section, slidably connected to the first section, and connected to the first transmission assembly; a second transmission assembly connected to the first locking assembly and slidable through an interior cavity of the second section; and a second locking assembly arranged at the first section and connected to the second transmission assembly; wherein when the operating assembly is operated, the first locking assembly is driven by the first transmission assembly to move axially, to lock or release the first section relative to the second section, and the second transmission assembly is driven by the first locking assembly to move axially, and the second locking assembly is driven by the second transmission assembly to lock or release the third section relative to the second section.