Telescopic Tube Damping Assembly With Arc-Arm Force Balancing
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Solution Overview
Problem
Existing telescopic tubes in photography and video recording auxiliary devices suffer from uneven damping force distribution, leading to instability, shifting, skewing, and premature failure of the damping mechanism due to the lack of a proper fixed structure and uniform elastic force application.
Innovation Solution
A damping structure with a specially designed elastic piece featuring arc-shaped elastic arms and a spiral structure, which ensures uniform elastic force application and stability by abutting against support structures within the elastic cavity, preventing shifting and skewing, and incorporating damping surfaces for smooth operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single spring is used as the damping mechanism, then the structure is simple, but the rebound force cannot be evenly released resulting in uneven damping force distribution
Solution Approach 1:
The single spring is divided into multiple springs (first spring and second spring) arranged at different positions. Each spring independently provides rebound force to its corresponding damping component, ensuring uniform force distribution across the damping mechanism while maintaining structural simplicity through modular arrangement.
Solution Approach 2:
Different springs are positioned at specific locations (first spring at first position, second spring at second position) to provide locally optimized damping force. This ensures that each region of the damping mechanism receives appropriate elastic force, resolving the uneven force distribution problem while keeping the overall structure straightforward.
2Ease of manufacture
If a conventional spring is used without proper fixed structure, then the assembly is simple, but the spring shifts, skews or falls off after multiple expansion and contraction operations
Solution Approach 1:
Limiting grooves are pre-formed in the damping components, and limiting blocks are pre-installed on the springs before assembly. This preliminary positioning ensures that the springs remain correctly positioned during multiple expansion and contraction operations, preventing shifting and skewing while maintaining simple assembly through the pre-configured limiting structures.
Solution Approach 2:
The limiting blocks act as intermediaries between the springs and the damping components. These blocks transfer and constrain the spring forces, ensuring proper positioning and preventing the springs from shifting or falling off during operation, thereby improving reliability without complicating the assembly process.
3Ease of manufacture
If the spring lacks proper fixed structure, then the installation is simple, but the service life is short due to shifting, skewing and falling off
Solution Approach 1:
The limiting grooves and limiting blocks are pre-configured during manufacturing, allowing for simple installation while ensuring long-term stability. The springs are pre-positioned using these limiting structures, which prevent shifting and skewing during operation, thereby extending the service life of the damping mechanism without complicating the installation process.
4Ease of operation
If damping surfaces are added to the outer wall, then the damping hand feeling is improved, but the structure becomes more complex
Solution Approach 1:
Damping surfaces are added only to the outer walls of the damping components that contact the telescopic tube, rather than throughout the entire structure. This localized addition improves damping hand feeling during operation while minimizing the increase in overall structural complexity, as the internal spring and limiting structures remain unchanged.
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 damping structure provides uniform elastic force distribution, enhances stability, prolongs service life, and offers a better damping experience with improved hand feeling, while being easy to assemble and maintain.
Implementation Method 1
An elastic cavity is formed in the damping assembly, and the elastic cavities on the two damping assemblies are oppositely arranged. The damping structure also includes an elastic piece. Both sides of the elastic piece are provided with elastic arms bent into arcs. The two elastic arms are respectively arranged in two elastic cavities
Implementation Method 2
the elastic piece includes a spiral structure located at the central position to form at least one circle of screw for storing and applying elastic force
Implementation Method 3
an outer wall of the damping assembly is provided with damping surfaces which are in contact with a tube wall and are used for providing damping during relative movement
Data Source
AI summary
The present disclosure provides a damping structure. The damping structure includes two damping assemblies which are oppositely arranged, and a gap is formed between the two damping assemblies. An inner wall of the damping assembly is provided with a locating piece for locating, and an outer wall of the damping assembly is provided with damping surfaces which are in contact with a tube wall and are used for providing damping during relative movement. An elastic cavity is formed in the damping assembly, and the elastic cavities on the two damping assemblies are oppositely arranged. The damping structure also includes an elastic piece. Both sides of the elastic piece are provided with elastic arms bent into arcs. The two elastic arms are respectively arranged in two elastic cavities, and a plurality of positions on the elastic arm abut against support structures in the elastic cavity.