Stand Leg Angle Wedge for Stable Manual Adjustment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing microphone stand designs with leg opening angle adjustment mechanisms are either cumbersome, require excessive manual effort, or have complex structures that increase manufacturing costs and component complexity, leading to instability and difficulty in maintaining changed angles.
Innovation Solution
A leg opening angle changing member with a simple structure that includes an insertion portion and attachment portions, allowing the leg opening angle to be adjusted by arranging the insertion portion between the leg attaching portion and the leg's proximal end, and secured using bolt and nut mechanisms, ensuring stability and ease of use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a sleeve with an insertion portion is used to change the leg opening angle, then the structure and operation are simple, but the force to maintain the changed angle is insufficient and the insertion portion may come off
Solution Approach 1:
A wedge-shaped insertion portion is introduced as an intermediary element between the leg and the base. This wedge acts as a mediator that transforms the simple sliding motion into a reliable locking mechanism. As the wedge is inserted, it forces the leg apart, changing the opening angle, and the wedge's geometry provides mechanical advantage to maintain the new angle position reliably.
Solution Approach 2:
The insertion portion is designed with a wedge shape that changes the geometric parameters of the leg-base connection. By varying the insertion depth of the wedge, the leg opening angle is adjusted. The wedge geometry converts linear insertion motion into angular positioning, providing both simplicity and reliability through parameter transformation.
2Adaptability or versatility
If a threaded screw mechanism is used to change the leg opening angle, then the angle can be adjusted continuously, but it requires manual rotation and takes relatively long time to change
Solution Approach 1:
The complex threaded screw mechanism is replaced with a simpler wedge-based system. Instead of using rotational threading to achieve continuous adjustment, the patent uses a wedge that can be inserted to varying depths, providing continuous angle adjustment through linear motion. This substitution eliminates the need for manual rotation while maintaining continuous adjustability.
Solution Approach 2:
Instead of using a screw that rotates to push the leg apart, the invention inverts the approach by using a wedge that is inserted directly to force the leg apart. The adjustment is achieved by controlling the insertion depth rather than by rotation, fundamentally inverting the traditional mechanical approach while achieving the same continuous adjustment function.
3Reliability
If a ratchet structure is used to change the leg opening angle, then the angle can be maintained stably, but the structure becomes complicated and manufacturing costs increase
Solution Approach 1:
The complex ratchet mechanism is extracted and replaced by the essential function it provides - maintaining the leg opening angle. The wedge-shaped insertion portion alone provides this maintaining function through its geometry and friction, eliminating the need for separate ratchet teeth and locking mechanisms. Only the essential elements are retained, simplifying the structure while maintaining reliability.
Solution Approach 2:
The wedge-shaped insertion portion is designed to maintain the leg opening angle through its own geometry and the friction it generates, without requiring additional locking mechanisms. The wedge itself provides the maintaining function, making the system self-sufficient and eliminating complex external locking structures.
4Measurement precision
If the leg opening angle is changed by rotating a screw, then the adjustment is precise, but it requires excessive manual effort and is cumbersome
Solution Approach 1:
The screw rotation mechanism requiring excessive manual effort is replaced with a wedge insertion system. The wedge provides mechanical advantage through its geometry, allowing precise angle adjustment with minimal effort. The friction between the wedge and the leg/base provides natural positioning, eliminating the need for complex threading and rotation.
Solution Approach 2:
The system changes from rotational parameter adjustment (screw rotation) to linear parameter adjustment (wedge insertion depth). This parameter transformation provides precise control over the leg opening angle through the wedge's geometry, while requiring significantly less manual effort compared to rotating a screw.
Data Source
AI summary
A leg opening angle changing member includes an insertion portion arranged between a leg attaching portion of a base of a stand and the proximal end of a leg of the stand, and an attachment portion attached to the leg attaching portion or the proximal end of the leg. The leg opening angle changing member is attached to the leg attaching portion or the proximal end of the leg by means of the attachment portion. The leg opening angle changing member is configured to change the leg opening angle to an opening angle smaller than an opening angle of the leg in a fully opened state by arranging the insertion portion between the leg attaching portion and the proximal end of the leg in a state in which the leg opening angle changing member is attached to the leg attaching portion or the proximal end of the leg.