Keyboard Frame Front Opening for Hammer Assembly
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Solution Overview
Problem
Conventional keyboard devices face difficulties in assembling hammers to the frame due to restrictions caused by the frame's shape or obstacles, requiring hammers to be inserted from above or below, which complicates the assembly process.
Innovation Solution
A keyboard device with a frame that has an opening portion at the front side, allowing hammers to be inserted from the front, where the hammer support parts are located between an upper and lower limit position, enabling easy assembly without changing the hammer's angle or direction, and providing a sufficient area for multiple hammers to be inserted simultaneously.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If hammers are inserted from above or below due to frame shape restrictions, then the hammers can be assembled to the frame, but the assembly process becomes complex and requires changing insertion direction multiple times
Solution Approach 1:
The patent inverts the conventional insertion approach by providing an opening portion at the front side of the frame (facing the player) instead of inserting hammers from above or below. This allows hammers to be inserted from the front direction, eliminating the need to change insertion direction multiple times and significantly simplifying the assembly process while maintaining the structural integrity of the frame.
2Ease of operation
If hammers are inserted from above or below, then the hammers can be engaged with hammer support parts, but the range of fluctuation in insertion direction is large and assembly becomes difficult
Solution Approach 1:
The patent provides an opening portion at the front side of the frame facing the player, which allows hammers to be inserted from the front direction. This inverted approach eliminates the need to change insertion direction multiple times and reduces the range of fluctuation in insertion direction, making the assembly operation simple and straightforward.
3Ease of manufacture
If key guides are present at the front side of white keys, then key guidance function is provided, but they become obstacles that prevent easy hammer insertion
Solution Approach 1:
The patent positions the opening portion at the front side of the frame in the vertical dimension, allowing hammers to be inserted from the front direction rather than from above or below. This dimensional change in insertion approach enables hammers to pass around the key guides located at the front side of white keys, eliminating the obstacle interference while maintaining the key guidance function.
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
Facilitates easy and straightforward assembly of hammers to the frame by allowing insertion from the front side without altering the hammer's orientation or position, reducing assembly complexity and avoiding obstacles like key guides.
Implementation Method 1
the hammers being supported at the respective hammer support parts such that the hammers are operatively connected to the corresponding keys below the corresponding keys to rotate about the respective hammer support parts, the hammers applying inertia to pivoting movements of the corresponding keys
Data Source
AI summary
A plurality of keys are supported at a key support parts such that the respective keys are pivoted by a key-pressing operation of a player in a vertical direction, the keys being arranged in parallel to each other along a width direction of the keyboard device. A plurality of hammers are arranged in parallel to each other along the width direction such that the hammers correspond to the respective keys. The hammers are operatively connected to the corresponding keys to rotate about the respective hammer support parts, the hammers applying inertia to pivoting movements of the corresponding keys. A frame has an opening portion open at a front area which faces the player, and located more frontward than the hammer support parts, and the frame is constructed such that the hammer support parts are located between an upper limit position and a lower limit position of the opening portion in the vertical direction, and the hammers can be inserted into the frame through the opening portion from the front area when the hammers are mounted to the respective hammer support parts.