Magnetic Ball Head Assembly to Prevent Tripod Nodding
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Solution Overview
Problem
Existing spherical tripod heads are prone to 'nodding' which can cause damage to external accessories due to loss of locking force over time.
Innovation Solution
A magnetic spherical tripod head is designed with a universal ball, a limiting seat, a magnetic piece, a first fixing part, and a second fixing part. The magnetic piece provides a stable magnetic attraction force to the ball head, combined with a limiting piece that limits the rotation of the ball head, ensuring secure attachment of external accessories.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional spherical tripod head is used, then the structure is simple and cost is low, but the locking force is lost over time causing nodding and damage to accessories
Solution Approach 1:
The patent replaces part of the mechanical locking system with a magnetic field system. A magnetic piece is installed in the ball seat to generate magnetic attraction force that acts on the ball head, providing additional locking force that supplements or replaces the mechanical friction between the limiting piece and ball head. This magnetic field-based approach maintains reliable locking without requiring increased mechanical complexity.
Solution Approach 2:
The patent changes the physical state of the locking mechanism by introducing magnetic field interaction. The magnetic piece generates a magnetic attraction force that creates a new parameter (magnetic force) to contribute to the locking mechanism, transforming the purely mechanical friction-based system into a combined magnetic-mechanical system with enhanced stability.
2Reliability
If the magnetic piece is added to provide stable attraction, then the nodding is prevented, but the device complexity increases
Solution Approach 1:
The magnetic piece replaces the need for overly tight mechanical tolerances and complex multi-component locking mechanisms. By using magnetic attraction force between the magnetic piece in the ball seat and the ball head, the system achieves stable attachment with a simple additive component rather than redesigning the entire mechanical structure.
3Reliability
If the limiting piece is made to abut tightly against the ball head, then the rotation is limited, but the locking force is lost over time
Solution Approach 1:
The magnetic attraction force provides a consistent physical parameter (magnetic force) that maintains locking pressure without wear. Unlike mechanical friction that degrades with use, the magnetic field maintains constant force, ensuring durable locking while allowing smooth adjustment when needed.
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 magnetic spherical tripod head effectively prevents 'nodding' and reduces damage to external accessories by maintaining a stable locking force, allowing for precise angle adjustments and improved practical performance during photography.
Implementation Method 1
The magnetic piece is fixed in the ball seat and attracts the ball head
Data Source
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AI summary
The present disclosure relates to a magnetic spherical tripod head and a tripod head assembly, which includes: a universal ball, comprising a ball head and a connecting handle; a limiting seat, comprising a ball seat for accommodating the ball head and a limiting piece movably abutting against the ball head and capable of limiting the rotation of the ball head in the ball seat; a magnetic piece, being fixed in the ball seat and attracting the ball head; a first fixing part and a second fixing part, being configured to detachably connect external accessories and respectively connected with the connecting handle and the limiting seat. The present disclosure overcomes the defect that the camera fixed on the existing spherical tripod head will quickly fall down and easily get damaged when the spherical tripod head is unlocked by the locking device.