Keyboard Support Assembly Integrating Escapement Mechanism
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Solution Overview
Problem
The complex assembly of acoustic piano components, particularly the support assembly, leads to prolonged manufacturing times and high costs, while simplifying the structure to reduce components can compromise the touch feeling and stability of key operation.
Innovation Solution
A support assembly for a keyboard apparatus that includes a rotatably disposed support, a jack with a contact surface for the hammer shank roller, and a rib projecting from the jack to stabilize the hammer shank roller contact, reducing the number of components while maintaining the touch feeling and stability of key operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the support assembly uses multiple components assembled together to achieve proper escapement mechanism operation, then the touch feeling and stability of key operation are maintained, but the assembling operation becomes very complex and takes long time
Solution Approach 1:
The patent combines multiple separate components (support body, support arm, and escapement mechanism parts) into a single integrated support assembly. The support arm is formed as one piece with the support body, and the escapement mechanism is incorporated into this unified structure, eliminating the need for complex assembly operations while maintaining the functional integrity and touch feeling of the original multi-component design
2Productivity
If the support assembly structure is simplified to reduce components, then manufacturing time and cost are reduced, but the touch feeling and stability of key operation are compromised
Solution Approach 1:
The support assembly integrates the support body, support arm, and escapement mechanism into a single unified component structure. This merging reduces the total number of parts and assembly steps, improving manufacturing efficiency, while the integrated design ensures that the escapement mechanism functions properly to maintain the intended touch feeling and operational stability
3Reliability
If multiple components are assembled together in the support assembly, then the escapement mechanism and hammer operation function properly, but the manufacturing cost increases
Solution Approach 1:
The patent integrates the escapement mechanism components into a unified support assembly structure where the support body, support arm, and escapement parts form a single integrated component. This reduces the number of separate parts that need to be manufactured and assembled, thereby lowering manufacturing costs while maintaining the proper functioning of the escapement mechanism and hammer operation
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
The proposed support assembly reduces manufacturing costs and maintains the touch feeling and stability of key operation, achieving a balance between simplification and performance.
Implementation Method 1
a jack (250) having one side rotatably connected to the support (210) and having another side including a contact surface which makes contact with a hammer shank roller (315)
Data Source
AI summary
A support assembly of a keyboard apparatus activated in accordance with pressing of a key to rotate a hammer provided at one end of a hammer shank, the support assembly includes a support rotatably disposed with respect to a frame, a jack having one side rotatably connected to the support and another side including a contact surface which makes contact with a hammer shank roller provided to the hammer shank, and a rib provided to the other side of the jack and projecting to a hammer shank roller side of the contact surface.