Musical Instrument Stand Spike Retraction Mechanism
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Solution Overview
Problem
Existing musical instrument stands with spike members at the distal ends of legs require complex and time-consuming operations for protruding and retracting the spike members, involving multiple buttons and repeated loosening/tightening of bolts, which complicates user interaction and increases operational load.
Innovation Solution
A distal structure of a leg for a musical instrument stand featuring a case with a spike member that can be easily protruded or retracted using a single operator, incorporating a switch mechanism with a presser, rotor, and receptor to limit vertical movement, allowing simple depression to switch between protruded and retracted states without the need for bolt manipulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a bolt is loosened and moved in the extending direction of the slot to protrude or retract the spike member, then the spike member can be adjusted, but the operation becomes complicated and time-consuming
Solution Approach 1:
The spike member is designed to protrude and retract automatically through a slot when the leg assembly moves, eliminating the need for manual bolt loosening and tightening. The adjustment mechanism serves itself by utilizing the natural movement of the leg assembly to drive the spike member in and out.
Solution Approach 2:
The adjustment mechanism is divided into separate functional components: the slot provides the movement path, the spring provides the protruding force, and the leg assembly movement provides the retraction force. This segmentation allows each component to perform its function independently and simply.
2Ease of operation
If two buttons are used to protrude and retract the spike member, then the spike member can be adjusted, but the structure becomes complex and the user may be confused about which button to operate
Solution Approach 1:
The complex dual-button control mechanism is completely removed and replaced with a passive automatic adjustment system. The spike member responds automatically to the natural movement of the leg assembly, eliminating the need for any manual control buttons or switches.
Solution Approach 2:
The system uses the leg assembly's own movement to automatically control the spike member's protrusion and retraction, making the system self-regulating and eliminating the need for external control mechanisms.
3Productivity
If bolts are repeatedly loosened and tightened to adjust the spike member, then the spike member position can be changed, but the operational time and effort increase substantially
Solution Approach 1:
The spike member adjusts itself automatically through the slot mechanism as the leg assembly moves, eliminating the time-consuming manual bolt manipulation process entirely.
Solution Approach 2:
The spring provides periodic protruding force to the spike member as the leg assembly moves, enabling rapid back-and-forth adjustment without manual intervention.
Data Source
AI summary
The distal structure of a leg for a musical instrument stand is constituted of a spike member installed inside the storage of a case having a ground portion whose ground surface is placed on the floor, a rotor interconnected to the spike member, and a single operator projected above the case. Upon a first depression, a presser of the operator depresses a projection of the rotor downward so that the spike member protrudes from the ground surface. In the protruded state of the spike member, the projection of the rotor is engaged with a receptor formed in a stepped interior of the storage. Upon a second depression, the presser of the operator depresses the projection of the rotor again so as to release the engagement between the projection and the receptor, so that the spike member moves to retract inside the storage of the case.