Drum Stand Collar Mechanism for Independent Leg Height Adjustment
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Solution Overview
Problem
Existing musical instrument stands for marching drums are complicated to manipulate and adjust, with increased manufacturing costs due to numerous components and difficulty in placing them across steps, as only one leg's length can be adjusted independently in current designs.
Innovation Solution
A musical instrument stand with a center pipe, lower and first movable collars, at least three legs, and stays, where the second movable collar is positioned below the first, allowing independent adjustment of leg heights and incorporating an overturning prevention device to prevent the stand from falling, enabling easier manipulation and stable placement across steps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple fixed and movable collars are used to allow independent leg adjustment, then the adaptability to different locations is improved, but the device complexity increases
Solution Approach 1:
The leg adjustment mechanism is segmented into multiple independent collars (first fixed collar, first movable collar, second fixed collar, second movable collar) that can be independently manipulated. Each collar pair controls a specific leg, allowing independent height adjustment of each leg to adapt to different step configurations and ground levels.
Solution Approach 2:
The collars are designed to be movable along the central rod, transforming the static leg structure into a dynamic one. The first and second movable collars can slide to different positions on the central rod, enabling the legs to dynamically adjust their lengths and angles to match various step patterns and terrain conditions.
2Adaptability or versatility
If multiple collars and stays are added to enable independent leg adjustment, then the adaptability is improved, but the number of manipulated portions increases making operation more complicated
Solution Approach 1:
The adjustment mechanism is divided into separate collar-leg assemblies, where each assembly (collar pair with its connected leg) can be adjusted independently. This segmentation allows the user to manipulate only the specific leg that needs adjustment rather than the entire structure, simplifying the operation despite having multiple adjustment points.
Solution Approach 2:
The collars are pre-positioned on the central rod at locations that correspond to common step heights and configurations. This preliminary positioning allows users to quickly adjust legs to standard step patterns without complex calculations or measurements, reducing the manipulation effort required.
3Ease of manufacture
If the leg structure is simplified to reduce manufacturing costs, then the ease of manufacture is improved, but the ability to place the stand across steps is reduced
Solution Approach 1:
The collar mechanism serves multiple functions: it acts as a connection joint between the leg and central rod, provides height adjustment capability, enables angle adjustment, and allows independent length modification of each leg. This multi-functionality means the same basic collar structure handles all adjustment needs without requiring additional specialized components, maintaining ease of manufacture while achieving step-crossing capability.
Solution Approach 2:
The movable collars transform a static, fixed-length leg structure into a dynamic, adjustable one. By allowing the collars to slide along the central rod, the system gains the ability to adapt to step configurations without requiring multiple pre-fabricated leg length variants, simplifying manufacturing while improving versatility.
Data Source
AI summary
A drum stand includes a center pipe, a fixed collar, a first movable collar, a second movable collar, legs, and stays. The fixed collar is secured to the lower end of the center pipe. The first movable collar and the second movable collar are slidably fitted to the center pipe. Legs of a first type are pivotally coupled to the first movable collar. A leg of a second type is pivotally coupled to the second movable collar. Stays of a first type are pivotally coupled to the second movable collar. A stay of a second type is pivotally coupled to the fixed collar.