Musical Chair Height Rod Locking Structure for Fast Adjustment
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Solution Overview
Problem
Conventional height adjusting mechanisms for musical instrument chairs are slow and labor-intensive, and existing solutions are complex, costly, and pose safety risks due to potential loosening issues.
Innovation Solution
A rapid fixing structure comprising an upright rod seat with a pressing plate and return spring, allowing users to easily adjust the chair height by pressing the plate, which is secured by height-different fastening slots and a safe latch mechanism to prevent rotation and ensure stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a screwing adjustment manner is used to adjust chair height, then the height can be adjusted in a stepless manner, but the adjustment process is slow and labor-intensive
Solution Approach 1:
The pressing plate is designed to pivot between a normal position (invading the receiving space to engage fastening slots) and an instant position (exiting the receiving space for quick release). This dynamic positioning allows the user to rapidly switch between locked and adjusted states without time-consuming screwing operations, directly resolving the contradiction between ease of operation and adjustment time
Solution Approach 2:
The height adjustment range is divided into multiple discrete fastening slots at different heights along the upright rod. Instead of continuous screwing adjustment, the pressing plate engages with these segmented positions to provide step-based height adjustment. This segmentation enables quick selection of predetermined heights, significantly reducing adjustment time while maintaining operational simplicity
2Reliability
If a conventional screw rod and fixing ring structure is used, then the screw rod can be maintained at a fixed height, but the structure is complicated and assembly cost is high
Solution Approach 1:
The invention extracts and eliminates the screw rod, fixing ring with threads, and radial-penetrating pressing screw from the conventional complex structure. Instead, it uses a simplified system consisting of an upright rod with fastening slots and a pressing plate that pivots to engage these slots. This extraction of unnecessary components dramatically reduces structural complexity and assembly cost while maintaining reliable height fixation through the pressing plate's engagement with the fastening slots
3Measurement precision
If a screwing fixation method is used, then the height can be precisely adjusted, but a weak user cannot loosen it if excessively screwed down, and unexpected loosening may occur if not screwed down properly
Solution Approach 1:
The pressing plate acts as an intermediary mechanism between the user's pressing action and the fastening slots. When the user presses the plate, it pivots to disengage from the fastening slots, allowing easy height adjustment even for weak users. The return spring then automatically pushes the plate back to engage with the nearest fastening slot, ensuring secure fixation without requiring excessive tightening force. This intermediary mechanism eliminates the problems of difficulty in loosening and unexpected loosening associated with direct screwing fixation
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 rapid, labor-saving height adjustments with increased safety and stability, preventing damage to the upright rod and ensuring secure seating.
Implementation Method 1
the return spring is disposed between the pressing plate and the upright rod seat, and pushes the pressing plate to be at the normal position under a normal state
Data Source
AI summary
The present invention aims to adjust the height of a musical instrument chair, including an upright rod seat, a pressing plate, a return spring, and an upright rod, wherein the upright rod seat comprises an up-to-down through receiving space and a side opening horizontally communicated with the receiving space; the pressing plate is disposed at the side opening and pivoted to the upright rod seat; the return spring is disposed between the pressing plate and the upright rod seat; and the musical instrument chair is disposed at an upper end of the upright rod, and the upright rod penetrates into the receiving space from up to down, and is provided with a plurality of height-different fastening slots in which the pressing plate is fastened at the normal position so as to fix the upright rod.