Telescopic Tube Damping Structure With Uniform Elastic Force
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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 special elastic piece featuring arc-shaped elastic arms and a spiral design, which ensures uniform elastic force application, stability, and resistance to shifting, skewing, and falling off, utilizing a locating piece and damping surfaces for synchronized movement with the inner tube.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a conventional spring is used as the damping mechanism, then the structure is simple, but the elastic force cannot be applied uniformly and the spring shifts, skews or falls off during use
Solution Approach 1:
The spring is segmented into multiple arc-shaped elastic arms (first elastic arm, second elastic arm, third elastic arm, fourth elastic arm) that are distributed around the inner tube. Each elastic arm independently contacts the inner tube at multiple positions, ensuring uniform elastic force distribution and preventing the spring from shifting or skewing during telescopic operations.
2Device complexity
If a single spring is used for damping, then the structure is simple, but the service life is short due to shifting, skewing and falling off
Solution Approach 1:
The spring is divided into multiple arc-shaped elastic arms that are fixed to the outer tube at different positions. This segmentation ensures that each elastic arm remains stable during telescopic operations, preventing the spring from shifting, skewing or falling off, thereby significantly extending the service life of the damping mechanism.
3Ease of manufacture
If the spring lacks a proper fixed structure, then the assembly is simple, but the spring shifts, skews or falls off during expansion and contraction
Solution Approach 1:
The elastic arms are pre-fixed to the outer tube at specific positions before assembly. This preliminary fixation ensures that during the telescopic operations, the spring maintains its position and does not shift, skew or fall off, while still allowing for simple assembly of the overall damping mechanism.
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 stable and uniform damping force, enhances the service life, and maintains good hand feeling during expansion and contraction, while being easy to assemble and maintain.
Implementation Method 1
an elastic piece (5), both sides of which are provided with elastic arms (52) bent into arcs. The two elastic arms (52) are respectively arranged in two elastic cavities (7), and a plurality of positions on the elastic arm (52) abut against support structures (71) in the elastic cavity (7)
Implementation Method 2
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
Figure 1
Figure 2~3
Figure 4~5
AI summary
The present invention 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 cavi