Keyboard Rail Support Poles Between Keys
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Solution Overview
Problem
Existing keyboard devices face challenges in compactly supporting transmission and hammer rails, leading to potential bending and vibration issues due to long rail lengths, which affects the keyboard's structural integrity and compactness.
Innovation Solution
The keyboard device employs transmission and hammer support poles arranged between keys, or in holes within keys, to securely support the rails, preventing bending and vibration, and utilizing notches in keys to accommodate these poles without obstructing key operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the keyboard device is made more compact, then the overall size is reduced, but the transmission rail and hammer rail become longer and more prone to bending and vibration
Solution Approach 1:
The support structure for the transmission rail and hammer rail is divided into multiple segments: rail support members positioned at both ends of the rails and multiple poles positioned at intermediate locations. This segmentation allows each support element to independently stabilize specific sections of the rails, preventing bending and vibration while enabling a compact overall keyboard design.
2Stability of the object's composition
If rail support members are positioned at the ends of the transmission rail and hammer rail, then the rails are well supported, but the keyboard device cannot be made compact
Solution Approach 1:
The support poles are positioned to extend in the vertical dimension between the keys, allowing the rails to be supported at multiple points along their length without increasing the horizontal footprint of the keyboard. This vertical arrangement enables compact keyboard dimensions while maintaining excellent rail support stability.
3Stability of the object's composition
If support poles are arranged in gaps between keys, then the rails are supported and compactness is improved, but key operation may be obstructed
Solution Approach 1:
The poles are strategically positioned in gaps between keys rather than uniformly distributed, creating local support zones where needed while leaving key action paths clear. This selective positioning provides effective rail support at critical locations without interfering with key depression and hammer striking operations.
Data Source
AI summary
A keyboard device where at least one of a transmission rail and a hammer rail is favorably supported, and a keyboard instrument including the keyboard device are provided. A transmission support pole for supporting the transmission rail and a hammer support pole for supporting the hammer rail are each arranged in a gap between two keys adjacent to each other among a plurality of keys, arranged in a hole provided in at least one of the plurality of keys, or arranged at a position corresponding to a key support shaft which supports at least one of the plurality of keys. As a result, at least one of the transmission support rail and the hammer support rail is favorably supported.