Friction Joint Structure for Lamp Head Positioning and Electrical Connection
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Solution Overview
Problem
Existing joint structures for connecting members that allow pivotal motion lack integrated electrical connections and preset frictional resistance, making it difficult to maintain adjusted positions and rotate components smoothly.
Innovation Solution
A joint structure with a plug part for electrical connections, friction-setting parts to provide preset rotational resistance, and screws to secure components without contributing to friction, allowing 360-degree rotation and maintaining pivotal positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a joint structure allows pivotal motion between members, then flexibility and adjustability are improved, but maintaining the adjusted position becomes difficult due to lack of frictional resistance
Solution Approach 1:
The patent applies parameter changes by incorporating a friction element with adjustable frictional resistance. The friction element's parameters (friction coefficient, contact pressure) are changed to provide sufficient resistance to maintain the adjusted position of the lamp head while still allowing manual repositioning. This resolves the contradiction by optimizing the friction parameter to balance ease of adjustment with position stability.
Solution Approach 2:
The joint structure implements dynamics by allowing the friction element to engage and disengage dynamically during operation. When the user adjusts the lamp head, the friction element temporarily slips to allow movement, then engages to maintain the new position. This dynamic behavior enables both easy adjustment and reliable position maintenance.
2Adaptability or versatility
If electrical connections are added to the joint structure, then functionality is improved, but device complexity increases
Solution Approach 1:
The patent merges the electrical connection function with the mechanical joint structure. The electrical connector is integrated into the joint assembly, combining mechanical connection and electrical connection into a single unified structure. This reduces overall device complexity compared to having separate mechanical and electrical connection systems.
Solution Approach 2:
The joint structure achieves multi-functionality by simultaneously providing mechanical pivotal motion, position maintenance through friction, and electrical power transmission. The single joint assembly performs multiple functions that would traditionally require separate components, thereby improving versatility without proportionally increasing complexity.
3Reliability
If frictional resistance is increased to maintain position, then position stability is improved, but rotation smoothness deteriorates
Solution Approach 1:
The patent optimizes the friction element's parameters (friction coefficient, contact area, normal force) to achieve the right balance. The parameters are tuned so that the friction force is sufficient to hold the lamp head at adjusted positions against gravity, yet not so high as to prevent smooth manual repositioning. This parameter optimization resolves the contradiction between position stability and rotation smoothness.
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
Enables easy adjustment and secure maintenance of pivotal positions with integrated electrical connections and smooth rotation, applicable in devices like lamps, while minimizing frictional interference.
Implementation Method 1
at least one side part having the ability to generate frictional rotational resistance to keep the at least one plug part in a predetermined position
Implementation Method 2
at least one electrical contact between the at least one side part and the at least one holding structure of the at least one joint part
Data Source
AI summary
An independent friction joint structure including: at least one plug part having a connection to a device, the device comprising a lamp head; at least one joint part holding the at least one plug part in place, the at least one joint part having at least one holding structure; at least one side part having the ability to generate frictional rotational resistance to keep the at least one plug part in a predetermined position; at least one electrical contact between the at least one side part and the at least one holding structure of the at least one joint part; and at least one screw to fit all the components of the independent friction joint structure together.