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Hammer shank of piano and method of manufacturing the same

A hammer handle, piano technology, applied to stringed instruments, instruments, etc., can solve problems such as hindering hammers from hitting strings

Active Publication Date: 2009-05-20
KAWAI MUSICAL INSTR MFG CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, the concern is that the hammer deflects or wobbles sideways during the pivoting movement, preventing the hammer from striking the strings properly

Method used

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  • Hammer shank of piano and method of manufacturing the same
  • Hammer shank of piano and method of manufacturing the same
  • Hammer shank of piano and method of manufacturing the same

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Embodiment Construction

[0025] The present invention will now be explained in detail with reference to the accompanying drawings showing preferred embodiments of the present invention. figure 1 The keyboard 1, the drum 2 and the hammer 3, etc. of the grand piano using the piano hammer handle according to the embodiment of the present invention are shown in a key-off state.

[0026] The keyboard 1 includes a plurality of keys 1a (only one of the keys is shown) arranged in the longitudinal direction of the grand piano. Each key 1a moves forward and backward (e.g. figure 1 The left and right directions shown) extend and are supported in a manner of pivoting around a balance pin (neither shown) erected on the key frame of the keyway.

[0027] The drum 2 is arranged above the rear of the keyboard 1 and includes a wippen 11, a jack 12, and a repetition lever 13 provided for each key 1a. The isometric rocker 11 extends in the front-rear direction, and its rear end is supported by the isometric rocker flange 1...

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PUM

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Abstract

There is provided a hammer shank for a piano which is capable of suppressing a change in the dimension between two arms due to dryness and wetness to thereby ensure smooth and stable operation of a hammer. A hammer shank is supported by a flange and pivotally moves in accordance with key depression. A shank body formed of wood has two bifurcated arms formed on one end thereof. These arms extend in facing and parallel relation to each other along respective opposite sides of the flange, and are pivotally supported by the flange. Phenol backers are attached on outer side surfaces of the respective two arms so as to prevent the two arms from being displaced in a direction in which they face each other.

Description

Technical field [0001] The invention relates to a hammer handle of a piano that pivots according to the depression of a key, and a method of manufacturing the same. Background technique [0002] Generally, the hammer of a piano having a hammer handle has been described in Japanese Patent Laid-Open No. 2005-77455. The hammers are arranged to be associated with respective keys, and each hammer is pivotally supported by a hammer shank flange (hereinafter simply referred to as "shank flange"). Each hammer includes an elongated wooden hammer handle and a hammer head fixed to the rear end of the hammer handle. The front end of the hammer handle diverges into two left and right arms, and the two arms face each other and extend forward in parallel. The shank flange is formed of a synthetic resin molded product and is screwed to the hammer shank rail. The rear end of the flange of the shank is formed with an engaging part protruding rearward, and the two arms of the hammer shank are engag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10C3/18G10C3/00G10C9/00
CPCG10C3/18G10C9/00
Inventor 竹森豪
Owner KAWAI MUSICAL INSTR MFG CO
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