KEYPAD STRUCUTRE FOR WOODWIND INSTRUMENT TONE HOLES

Abstract

The present disclosure relates to a keypad structure for woodwind instrument tone holes, and more particularly, to a keypad structure for woodwind tones which improves the adhesion of a keypad connected to a tone hole tube in which the tone hole is formed in the woodwind instrument, prevents the sound from being exposed to the outside through the tone hole tube and the pad, and can generate excellent resonance so that the resonance of a desired sound can be constantly generated through the closed keypad.

Claims

1. A keypad structure A for woodwind instrument tone holes comprising: a plurality of tone hole tubes 1 in which tone holes la are formed on the woodwind instrument B, a pad 2 detachably attached to the tone hole tubes 1, and a key 3 to which the pad 2 is attached to the inside surface and which moves the pad 2, wherein the keypad structure A for a woodwind instrument tone holes is characterized in that a separated pad 2 is disposed on the back surface 3b of the key 3, a solid body 7 is inserted between the separated pad 2 and the inside surface 3a of the key 3, heated with hot air to melt the solid body 7, the solid body 7 filled in the inside space S1 between the pad 2 and the inner surface 3a of the key 3 is cured at room temperature, and in the joining part between the key 3 and the pad 2, the inside space S1 disappears and three parts of the pad 2, the solid body 7 and the key 3 are present.

2. The keypad structure for woodwind instrument tone holes according to claim 1, wherein: the solid body 7 is selected from solid silicone, shellac, thin paper or thin vinyl.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0015] FIGS. 1A, 1B and 1C are a photograph showing an opened space between the conventional defective tone hole tube and the pad, a photograph showing a method of repairing it, and a cross-sectional view of a keypad in which a conventional key and pad are joined;

[0016] FIG. 2 is a schematic perspective view of a saxophone, which is a type of woodwind instrument;

[0017] FIG. 3 is an exploded perspective view of the keypad structure for woodwind instrument tone holes according to a first embodiment of the present disclosure;

[0018] FIG. 4 is a block diagram of a method of molding the keypad structure for woodwind instrument tone holes according to a first embodiment of the present invention;

[0019] FIGS. 5A, 5B and 5C are schematic longitudinal cross-sectional views of a keypad structure for a woodwind instrument tone hole according to a first embodiment of the present disclosure, a longitudinal sectional view of the gap space at the time of deformation, and a longitudinal cross-sectional view at the time of filling; and

[0020] FIG. 6 is a photograph showing a pad that is in close contact with the upper part of the tone hole tube of the keypad structure for a woodwind instrument tone hole according to the first embodiment of the present disclosure.

DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] A keypad structure A for woodwind instrument tone holes according to a first embodiment of the present disclosure includes a plurality of tone hole tubes 1 in which tone holes la are formed on the woodwind instrument B, a pad 2 detachably attached to the tone hole tube 1, and a key 3 to which the pad 2 is attached to the inside surface and which moves the pad 2.

[0022] The keypad structure A for woodwind instrument tone holes according to a first embodiment of the present disclosure is provided with tone hole tubes 1 in which tone holes la are formed, and a large number of pads 2 that detachably closes the tone holes la of the tone hole tubes 1.

[0023] In the keypad structure A for woodwind instrument tone holes according to a first embodiment of the present disclosure, one side of the pad 2 is in close contact with the upper peripheral edge part 1b of the tone hole tube 1, and the other side is attached to the inside surface of the key 3 and detachably moves the pad 2.

[0024] The keypad structure has a structure in which one end of the arm 4 is attached to the outside of the key 3, and the other end of the arm 4 is connected to the key rod 5 and a key button 6 is disposed. Since the part of importantly dealing the keypad structure A for woodwind instrument tone holes according to the first embodiment of the present disclosure is the structure of the tone hole tube 1, the pad 2, and the key 3, it is considered that the description of other parts may be omitted, and thus the description thereof will be omitted below.

[0025] As already described in the prior art, a space S is generated between the pads 2 that are detachably attached to the upper peripheral edge part 1b of the tone hole tube 1 and close the upper peripheral edge part, and a vibration sound is leaked through the space S, so that the original sound is prevented from being generated.

[0026] The reason for this is that the space between the pads 2 adhesively fixed to the inside surface 3a of the key 3 is not completely filled, and an empty inside space S1 is partially generated, and even when the pad 2, which is detachably attached to the upper peripheral edge part 1b of the tone hole tube 1 by the inside space S1 and closes the upper peripheral edge part, is closed, the empty inside space S1 is pressed irregularly to create a space S of the opened gap.

[0027] The pad 2 includes a leather-made contact leather part 2a that is in contact with the upper peripheral edge part 1b of the tone hole tube 1, an intermediate overlapping part 2b in which a large number of thin papers disposed on the inside of the contact leather part 2a are overlapped, and an inside leather part 2c in which the edge of the contact leather part 2a is adhered to the inside edge of the intermediate overlapping part 2b. The keypad structure A for tone holes of all woodwind instruments is configured such that an empty inside space S1 is formed between the inside leather part 2c of the pad 2 and the inside surface 3a of the key 3.

[0028] Looking at the structure of the pad 2 in more detail, the intermediate overlapping part 2b of the pad 2 is composed of a synthetic fiber fabric, a thin paper aggregate, and the like, a thin paper is attached to the upper and lower surfaces of the intermediate overlapping part 2b, a contact leather part 2a and the inner leather part 2c are adhered to the upper and lower surfaces of the intermediate overlapping part 2b, and it is fixed by a fixing plate 2e which penetrates through the contact leather part 2a, the intermediate overlap part 2b, and the paper 2d in the middle.

[0029] Since all of the keypad structures A for tone holes are used so that an empty inside space S1 is formed between the inside leather part 2c of the pad 2 and the inside surface 3a of the key 3, some of the keypad structure A for the tone hole may be used in a state where an empty inside space S1 is formed. However, since most of the keypad structures A for tone holes are formed so that the empty inside space S1 are irregularly formed. Therefore, by the irregularly formed inside space S1, as shown in FIG. 5b, while a load is concentrated on the space S2 which is very empty among the inside spaces S1 during use, the space S2 which is very empty among the inside spaces S1 is deformed. Even when the pad 2 that is detached from the upper peripheral edge part 1b of the tone hole tube 1 and closes the upper peripheral edge part 1b is in close contact, an opened space S is generated, and the sound leaks through the opened space S, and the vibration of the desired sound is disturbed.

[0030] In this way, even when the pad 2 that is detachably attached to the upper peripheral edge part 1b of the tone hole tube 1 and closes the upper peripheral edge part 1b is in close contact, in order to repair the generation of an opened space S, as shown in FIG. 4, first, the back surface 3b of the key 3 to be repaired is heated with hot air to a temperature of about 60 to 95° C., preferably 80° C. to separate the adhesive part 7a of the pad 2 attached to the inside surface 3a of the key 3. The same solid body 7 as the component of the joining part 7a is inserted between the separated pad 2 and the inside surface 3a of the key 3, the pad 2 is inserted into the inside surface 3a of the key 3, and reheated with hot air. As the solid body 7 melts, the entire inside space S1 is filled, and filled so that there is no inside space S1. And, when the inside space S1 is filled with the solid body 7 in this way, and then the hot air is removed, the solid body 7 filled in the inside space S1 is cured at room temperature. Therefore, the space disappears in the joining part of the repaired key 3 and the pad 2, and only three parts of the pad 2, the solid body 7, and the key 3 are present.

[0031] The solid body 7 can be melted in hot air such as solid silicone and shellac used as an adhesive for the pad 2 of saxophone having a large pad, or an object that maintains a solid state at room temperature may be used, or thin paper or thin vinyl may be used for the pad 2 such as a flute with a small pad.

[0032] In this way, the solid body 7 filled in the entire inside space S1 also fills the contracted empty space S2 in the inside space S1, so that all the spaces S1 and S1 disappear. Thus, as shown in FIG. 5C, the space disappears in the joining part of the repaired key 3 and the pad 2, and only three parts of the pad 2, the solid body 7 and the key 3 are present. In such a state, even when a woodwind instrument is used, the solid body 7 is filled between the key 3 and the pad 2 of the keypad structure A. Thus, in spite of long-term use without deformation, the pad 2 that is detached from the upper peripheral edge part 1b of the tone hole tube 1 and closes the upper peripheral edge part makes it possible to completely block the upper peripheral edge part 1b of the tone hole tube 1 without a gap S.

[0033] As described above, in the keypad structure A for woodwind instrument tone holes according to the present disclosure, an empty space inside the pad and the key is removed, thereby improving the adhesion of a keypad connected to a tone hole tube of the woodwind instrument, preventing the sound from being exposed to the outside through the tone hole tube and the pad, generating excellent resonance so that the resonance of the desired sound can occur consistently.

INDUSTRIAL APPLICABILITY

[0034] The keypad structure for woodwind instrument tone holes according to the present disclosure can repeatedly produce the same product in the woodwind instrument industry for producing general woodwind instruments, which can thus be an invention with industrial applicability.

EXPLANATION OF SYMBOLS

[0035] A . . . keypad structure for woodwind instrument tone holes

[0036] B . . . woodwind instrument

[0037] 1 . . . tone hale tube

[0038] 1a . . . tone hole

[0039] 1b . . . peripheral edge part

[0040] 2 . . . pad

[0041] 3 . . . key

[0042] 4 . . . arm

[0043] 5 . . . key rod

[0044] 6 . . . key button