JP3203951U - Counterpiece with stopper used in the manufacturing process of discs that stabilize the pads of music wind instruments - Google Patents

Abstract

A counterpiece capable of more easily producing a stabilized disk is provided. A counterpiece is formed in a tone hole in a molding process of a stabilization disk that is installed to stabilize a pad assembly placed in a key cup to close the tone hole of a wind instrument. The counter piece 50 is provided with a circular portion 51 and a stopper 70. [Selection] Figure 9

Description

  The present invention relates to a specific counter piece used in the manufacturing process of a disc for stabilizing a pad assembly placed in a key cup to close a tone hole of a wind instrument. .

  In a wind instrument such as a brass instrument or a woodwind instrument, particularly a flute, a player can play different sounds by opening and closing a plurality of tone holes with a finger. In general, a player places his / her finger on multiple keys with key mechanisms and keywork of the instrument, so that the player's fingers can directly or indirectly (lever-type) operate each of the multiple tone holes on each of the multiple tone holes. You can put a key cup.

  The sound quality of wind instruments largely depends on the precision of the tone hole closure by the key cup. Ideally, the cup closes the tone hole tightly and the instrument body and cup resonate together like a single uniform acoustic body. If the key cup is not precisely aligned with the tone hole, some of the air leaks from the closed tone hole during performance, producing some kind of undesirable whistling sound. In order to fit the cup tightly and tightly into the tone hole, the cup is usually fitted with a pad assembly consisting of a felt covered with a resin film or some animal skin.

  In order to better support the pad assembly in the key cup, it is also known to place a stabilizing disc between the bottom surface inside the cup and the pad assembly. In general, the stabilizing disk is made of a synthetic resin material formed by injection molding or the like. Such a stabilizing or backing disk improves the installation of the pad assembly in the cup and provides a reasonably airtight closure of the tone hole by the key cup even when the wind instrument is used for a long time. Can be achieved.

  However, the bottom surface inside the cup often causes problems because the surface is not flat. That is, the inner bottom surface has a heterogeneity in the sense that it does not have rotational symmetry with respect to its center point. This non-planarity or inhomogeneity may be due to incomplete cup machining or working processes in the first place, or may be caused by general wear behavior that occurs while using the instrument. . The presence of a non-planar surface on the inner bottom surface will cause a shift in the movement of the stabilizing disc and pad assembly in the cup. As a result, the cup cannot close the tone hole in an airtight manner.

  You can try to solve this problem by pressing the pad assembly placed on the tone hole more strongly, but then by applying a stronger pressing force to the player to close the cup with the key mechanism, Further problems are caused by uneven loading or pressure along the edges of the pad assembly.

  In order to compensate for the uneven surface structure on the bottom surface inside the cup, wind instrument repair specialists have applied a thin pad of cardboard material, etc. Developed a method to put Thereby, non-flatness can be corrected and the sound quality of the musical instrument can be restored. However, such repair work is very complex and difficult, takes time and requires advanced skills and expertise. Therefore, it is desirable to find an easier and more efficient method for correcting the non-planarity of the bottom surface inside the cup.

  Another common problem that can compromise the closing of the tone hole by the key cup is that the key mechanism or key work is such that the key cup hits the horizontal completely against the tone hole, i.e. the pad assembly in the cup is at the outer edge of the tone hole. In contrast, it does not work precisely so that it is in a direction that is completely parallel. There is a high probability that the pad assembly will be slightly inclined when it hits the outer edge of the tone hole, which means that the tone hole will close in a rotationally asymmetric manner and that the force pressing the pad assembly during performance will not be uniform. It means to end. Such tilt angles may arise as a result of long-term use of the instrument, or may be inherent due to incomplete assembly in the manufacturing process.

  As a result of the tilt angle mentioned above, the angle at which the pad assembly closes the tone hole is perfect, even if it is a stabilizing disc that completely compensates for the inhomogeneity (non-flatness) of the bottom surface inside the cup. Will not be level. In this case, even if the pad assembly is perfectly placed horizontally with respect to the cup, the mechanism for connecting the key cup to the key work with the hinge is not sufficiently precise, so that the tone hole is not used when using the wind instrument. It will hit diagonally.

  In addition, as a result of the above-mentioned problems, the quality of the sound emitted from the musical instrument by the player may deteriorate, the sound may be too metallic, or the volume may not be sufficiently obtained.

  A disk to stabilize the pad assembly placed in the key cup for closing the tone hole of the wind instrument to solve these problems and is in a solid state at room temperature and higher than the predetermined temperature (predetermined A disc characterized by being a single unit made of a material that becomes a malleable state at a higher temperature is disclosed (Patent Document 1). Similarly, Japanese Patent Laid-Open No. 2004-228561 is installed in the tone hole in the molding process of the stabilizing disk installed to stabilize the pad assembly placed in the key cup in order to close the tone hole of the wind instrument. A counterpiece comprising a first circular part and a second circular part concentrically arranged with the first part and having a smaller diameter than the first part It is disclosed.

  A method for manufacturing a stabilizing disk according to one preferred embodiment of US Pat. No. 6,099,049 places a precursor disk in a cup so that the top surface of the precursor disk is placed on a non-flat bottom surface inside the cup. To. By heating the cup to a temperature of about 70 ° C. to 80 ° C. (using a Bunsen burner or other applicable heating means) or to a temperature at which the disk material reaches a soft state, the precursor disk becomes soft. A predetermined pressure is applied to the precursor disk from at least one side of the precursor disk, preferably from the side of the precursor disk not facing the cup bottom surface (ie from the bottom surface) Mold to fit the shape of the bottom. The predetermined pressure applied to the precursor disk during the molding process causes the precursor disk to deform into a stabilizing disk such that the top surface is shaped to be complementary to the non-flat bottom surface inside the cup. It is enough power. Furthermore, according to Patent Document 1, the predetermined pressure applied in the molding process can be applied through a specially configured counter piece.

  However, when a precursor disk is formed by applying a predetermined pressure to a counter piece used in the process of manufacturing the stabilizing disk, it is necessary for an operator to manufacture a stabilizing disk with an appropriate thickness. Pressure must be applied to the counterpiece, for example, too much pressure applied to the counterpiece can result in the stabilization disk becoming thinner than desired or there is not enough pressure to apply the stabilization disk. In some cases, the thickness becomes thicker than desired.

Special table 2015-511333

  This invention solves the said subject and aims at supplying the counterpiece (50) which can manufacture the stabilization disk (20) more simply.

  In order to solve the above problems, the counterpiece (50) according to the present invention stabilizes the pad assembly (30) placed in the key cup (40) to close the tone hole (61) of the wind instrument. A counterpiece (50) installed in the tone hole (61) in the process of forming the stabilizing disk (20) installed in the at least one circular portion (51) and a stopper (70). Prepare.

  The stabilizing disk (20) is made of a material that is in a solid state at room temperature and becomes flexible at a predetermined higher temperature, such as a hard wax material. A hard wax material is defined as a wax or waxy material that is solid at room temperature, desirably hard, and that is molten or softened at elevated temperatures or becomes plastic or elastic. The hard wax material used in the present invention is a petroleum-derived wax, other synthetic wax, natural wax, or a modified version thereof as long as it is solid at room temperature, preferably hard, and becomes soft at a predetermined higher temperature. You can choose from materials such as quality wax.

  “Solid state” as used herein means that the material is physically solid, preferably rigid. The term “malleable state” as used herein means a state in which a physical state is a molten state, a softened state, or a plastic state and has flexibility. As used herein, “integral body” refers to an object that is structurally unitary, preferably an object that has a uniform physical or chemical composition throughout the object. “Predetermined higher temperature” means the temperature at which a material goes from a solid state to a molten or softened state, or to a plastic and flexible state.

  Further, the purpose of the above-mentioned stabilizing disk disclosed in Patent Document 1 is to stabilize the pad assembly (30) in the key cup (40) for closing the tone hole (61) of the wind instrument. A material that is in a solid state at room temperature and becomes flexible at a predetermined temperature higher than that, and the upper surface (21) of the disk is complementary to the non-flat surface of the bottom surface (41) inside the key cup (40). This can be achieved by the disk (20) of the relevant shape.

  The material (precursor) before molding of the stabilizing disk (20) may be arranged in a disk shape, may be arranged in a powder form, or a liquid or molten precursor is dropped into a dropper or a dispenser. May be dropped and placed in a solid state in the cup (40) to form a precursor.

  Preferably, the stabilizing disk (20) is manufactured from a precursor disk (10) having a flat, particularly preferably uniformly flat top and bottom surface.

  The counterpiece (50) provided with the stopper (70) of the present invention is used for pressurization in the molding process. The counterpiece (50) is designed so that it can be inserted into the tone hole (61). By using this counterpiece (50), the molding process can be performed in situ, that is, the wind instrument has a key mechanism. It becomes possible to perform it in the installed state. The counterpiece (50) has at least one disk-shaped part (51).

  The counterpiece (50) of the present invention includes a stopper (70). The stopper (70) of the present invention refers to the first circular portion (51) of the counterpiece (50) so that the stabilization disk (20) can be formed to a desired thickness in the process of forming the stabilization disk (20). ) And the bottom surface (41) inside the key cup (40). In addition, between the 1st circular part (51) of a counterpiece (50), and the bottom face (41) inside a key cup (40), the extension part of the cross-sectional plane of a 1st circular part (51) is provided. It includes the space between the inner bottom surface (41) of the key cup (40). That is, as shown in FIG. 9, when the circular part (51) of a counterpiece has a recessed part and a through-hole, it means that a stopper (70) may be installed in a recessed part and a through-hole. In addition, the counterpiece (50) and the stopper (70) of FIG. 9 are each provided with a through hole.

  The stopper (70) in the present invention only needs to function as a stopper, and examples thereof include a polygonal column such as a triangular prism and a quadrangular column, a columnar shape such as a columnar shape, and a spherical shape. It is not something.

  The stopper (70) in the present invention may be installed between the first circular portion (51) of the counterpiece (50) and the bottom surface (41) inside the key cup (40). (70) may be installed, for example, on the first circular portion (51) of the counterpiece (50), or in the first circular portion (51) of the counterpiece (50). If there is a hole (54), it may be installed in the recess (71) or the through hole (54). Further, the counterpiece (50) and the stopper (70) may be provided with a recess, a through hole, a groove, or the like so that an excess of the disk material can enter.

  A stopper of desired thickness corresponding to the desired thickness of the stabilizing disk (20) between the first circular portion (51) of the counterpiece (50) and the bottom surface (41) inside the key cup (40). When the precursor disk (10) is formed by applying a predetermined pressure to the counterpiece (50) used in the process of manufacturing the stabilizing disk (20) by installing (70), the stopper (70) Can be stopped when it hits the bottom surface (41) inside the key cup (40) or a specific part of the key cup (40). This makes it possible to automatically manufacture a stabilized disk (20) having a desired thickness, and also enables mass production mechanically. In particular, a screw-like stopper is preferable because it can be easily and repeatedly adjusted to a desired thickness by rotating the screw.

  The counterpiece (50) has at least one circular portion (51). The counterpiece (50) is designed to be inserted into the tone hole (61), and the first circular portion (51) has substantially the same thickness as the pad assembly (30), and the pad assembly (30) is formed during the molding process. It is configured to be put in as an alternative. The outer diameter of the first circular portion (51) is larger than the outer diameter of the tone hole (61), but smaller than the inner diameter of the key cup (40).

  The counterpiece (50) may have a second circular portion (52). The diameter of the second circular portion (52) is smaller than the inner diameter of the tone hole (61) and is configured to stabilize the counterpiece (50) in the tone hole (61) in the molding and pressing process.

  The first circular portion (51) of the counterpiece (50) may have a recess (71). By having the recess (71), an excess of the disk material can be eliminated or guided to the recess (71). You may have a recessed part (71) in the center part, and you may provide with two or more in the other part. More preferably, it may have a through hole (54). By having the through hole (54), an excess of the disk material such as hard wax extruded during molding can be easily discharged. You may have a through-hole (54) in the center part, and you may provide two or more in the other part. Further, the counterpiece (50) and the stopper (70) may be provided with a recess, a through hole, a groove, or the like so that an excess of the disk material can enter. Examples of these shapes include, but are not limited to, a polygonal column such as a triangular column or a quadrangular column, or a columnar column such as a column.

  After molding, the stabilizing disk (20) is cooled to a non-flexible hard state. After several finishing steps, such as removal of excess disc material on the central and peripheral portions and on the surface, the stabilizing disc (20) is in its final shape. The final shape is that the lower surface (22) is flat or most of its area is flat, and when the stopper (70) is an object separated from the counterpiece (50), the stopper (70) is included inside. The upper surface (21) may be a shape that is a non-flat upper surface (21) that is particularly complementary to the non-flat surface of the inner bottom surface (41) of one particular cup (40). .

  As described above, by using the counterpiece (50) provided with the stopper (70) according to the present invention, the stabilized disk (20) having a desired thickness can be automatically manufactured. Thus, the stabilized disk (20) can be manufactured more easily.

It is a perspective view of a precursor disk. It is a perspective view of a stabilization disk. It is a side view of a stabilization disk. FIG. 6 is a cross-sectional view of a key cup including a keypad assembly and a stabilizing disk. It is a perspective view of the counterpiece in connection with one of the embodiments of the present invention. It is a side view of the counterpiece in connection with one of the embodiments of this invention. It is a perspective view of the counterpiece in connection with one of the embodiments of the present invention. It is a side view of the counterpiece in connection with one of the embodiments of this invention. FIG. 6 is a cross-sectional view of a flute illustrating the use of a counterpiece with a stopper in the manufacturing process of a stabilizing disk.

  Hereinafter, an embodiment of the present invention will be described. The embodiments are illustrative and not limiting.

  Examples of typical dimensions that fit the flute key cup (40) include a precursor disk (10) diameter of 10-20 mm and a thickness of 1-2.5 mm, or a tone hole ( Depending on the type of 61) and / or the instrument, the thickness will be greater, for example 4 mm to 5 mm.

  The stabilization disk (20) shown in FIG. 2 is obtained by the manufacturing process of the stabilization disk (20) according to one preferred embodiment of Patent Document 1. The disc (20) has a non-flat, particularly rotationally asymmetric top surface (21) that is shaped to fit the non-flat surface of the bottom surface (41) in the instrument key cup (40). Is made. The lower surface (22) of the stabilizing disk (20) has a planar structure. Two different faces (21) and (22) of the shape of the stabilizing disc (20) are shown in FIG. The inhomogeneity of the upper surface (21) shown in FIG. 3 is exaggerated for explanation.

  FIG. 4 schematically shows the arrangement of the stabilizing disk (20) between the pad assembly (30) and the bottom surface (41) inside the key cup (40). The example shown here shows a closed key cup. Of course, the present invention is also applicable to a ring key cup that has a central opening and in which the player's finger closes the central opening of the cup (40) during operation. As this figure shows, the non-planar top surface (21) of the stabilization disk (20) is closely matched to the individual non-planar surface of the bottom surface (41) inside the cup (40). Also in this case, the non-uniformity of the bottom surface (41) in the cup (40) shown in this figure is exaggerated for explanation.

  A pad assembly (30) consisting of a ring-like felt, typically covered with a resin film or some animal skin, is applied to the flat underside (22) and the center of the washer (42) and cup (40). A screw (43) is screwed into a nut (not shown) arranged in the cup (40) to be fixed to the cup (40). The lower side of the pad assembly (30) is configured to close the tone hole (61) in an airtight manner when the player operates the wind instrument via the key mechanism.

  The counterpiece (50) has at least one circular portion (51). The counterpiece (50) is designed to be inserted into the tone hole (61), and the first circular portion (51) has substantially the same thickness as the pad assembly (30), and the pad assembly (30) is formed during the molding process. It is configured to be put in as an alternative. The outer diameter of the first circular portion (51) is larger than the outer diameter of the tone hole (61), but smaller than the inner diameter of the key cup (40).

  The counterpiece (50) of the present invention includes a stopper (70). The stopper (70) of the present invention refers to the first circular portion (51) of the counterpiece (50) so that the stabilization disk (20) can be formed to a desired thickness in the process of forming the stabilization disk (20). ) And the bottom surface (41) inside the key cup (40). In addition, between the 1st circular part (51) of a counterpiece (50), and the bottom face (41) inside a key cup (40), the extension part of the cross-sectional plane of a 1st circular part (51) is provided. It includes the space between the inner bottom surface (41) of the key cup (40). The extension of the cross-sectional plane of the first circular portion (51) means that the first circular portion (51) of the counterpiece (50) has a recess or a through hole (54) as shown in FIG. In this case, it means that the stopper (70) may be installed in the recess or the through hole (54). In addition, the counterpiece (50) and the stopper (70) of FIG. 9 are each provided with a through hole.

  The stopper (70) in the present invention only needs to function as a stopper, and examples thereof include a polygonal column such as a triangular prism and a quadrangular column, a columnar shape such as a cylindrical shape, a spherical shape, and a screw shape. However, it is not limited to these.

  The counterpiece (50) may have a second circular portion (52). The diameter of the second circular portion (52) is smaller than the inner diameter of the tone hole (61) and is configured to stabilize the counterpiece (50) in the tone hole (61) in the molding and pressing process.

  The counterpiece (50) may have a recess (71). By having the recess (71), an excess of the disk material can be eliminated or guided to the recess (71). You may have a recessed part (71) in the center part, and you may provide with two or more in the other part. More preferably, it may have a through hole (54). By having the through hole (54), an excess of the disk material such as hard wax extruded during molding can be easily discharged. You may have a through-hole (54) in the center part, and you may provide two or more in the other part. Examples of these shapes include, but are not limited to, a polygonal column such as a triangular column or a quadrangular column, or a columnar column such as a column.

  After molding, the stabilizing disk (20) is cooled to a non-flexible hard state. After several finishing steps, such as removal of excess disc material on the central and peripheral portions and on the surface, the stabilizing disc (20) is in its final shape. The final shape is that the lower surface (22) is flat or most of its area is flat, and when the stopper (70) is an object separated from the counterpiece (50), the stopper (70) is included inside. The upper surface (21) may be a shape that is a non-flat upper surface (21) that is particularly complementary to the non-flat surface of the inner bottom surface (41) of one particular cup (40). .

  FIG. 5 and FIG. 6 show one embodiment. The counterpiece (50) has one circular part (51). The counterpiece (50) is designed to be inserted into the tone hole (61), and the first circular portion (51) has substantially the same thickness as the pad assembly (30), and the pad assembly (30) is formed during the molding process. It is configured to be put in as an alternative. The outer diameter of the first circular portion (51) is larger than the outer diameter of the tone hole (61), but smaller than the inner diameter of the key cup (40).

  The counterpiece (50) of the present invention includes a stopper (70). The stopper (70) of the present invention refers to the first circular portion (51) of the counterpiece (50) so that the stabilization disk (20) can be formed to a desired thickness in the process of forming the stabilization disk (20). ) And the bottom surface (41) inside the key cup (40). In addition, between the 1st circular part (51) of a counterpiece (50), and the bottom face (41) inside a key cup (40), the extension part of the cross-sectional plane of a 1st circular part (51) is provided. It includes the space between the inner bottom surface (41) of the key cup (40). The extension of the cross-sectional plane of the first circular portion (51) means that the first circular portion (51) of the counterpiece (50) has a recess or a through hole (54) as shown in FIG. In this case, it means that the stopper (70) may be installed in the recess or the through hole (54). In addition, the counterpiece (50) and the stopper (70) of FIG. 9 are each provided with a through hole.

  In the embodiment of FIGS. 5 and 6, the counterpiece (50) has a recess (71). By having the recess (71), an excess of the disk material can be eliminated or guided to the recess (71). In consideration of the convenience of work, a handle (80) may be provided.

  7 and 8 show one embodiment. The counterpiece (50) of FIGS. 7 and 8 has first, second, and third circular portions (51)-(53). The counterpiece (50) is designed to be inserted into the tone hole (61), and the first circular portion (51) has substantially the same thickness as the pad assembly (30), and the pad assembly (30) is formed during the molding process. It is configured to be put in as an alternative. The outer diameter of the first circular portion (51) is larger than the outer diameter of the tone hole (61), but smaller than the inner diameter of the key cup (40).

The counterpiece (50) of the embodiment of FIGS. 7 and 8 is provided with a stopper (70). The stopper (70) of the present invention refers to the first circular portion (51) of the counterpiece (50) so that the stabilization disk (20) can be formed to a desired thickness in the process of forming the stabilization disk (20). ) And the bottom surface (41) inside the key cup (40). In addition, between the 1st circular part (51) of a counterpiece (50), and the bottom face (41) inside a key cup (40), the extension part of the cross-sectional plane of a 1st circular part (51) is provided. It includes the space between the inner bottom surface (41) of the key cup (40). The extension of the cross-sectional plane of the first circular portion (51) means that the first circular portion (51) of the counterpiece (50) has a recess or a through hole (54) as shown in FIG. In this case, it means that the stopper (70) may be installed in the recess or the through hole (54). In addition, the counterpiece (50) and the stopper (70) of FIG. 9 are each provided with a through hole.
7 and 8, a screw-like stopper is used as the stopper (70). In particular, a screw-like stopper is preferable because it can be easily and repeatedly adjusted to a desired thickness by rotating the screw.

  You may have a 3rd circular part (53) as shown in FIG.7 and FIG.8. The third circular part (53) may optionally be provided on the counterpiece (50), but (a) functions as an optional part to make it easier to grip the counterpiece (50). And (b) function as a discharge port for discharging excess disc material (for example, wax) extruded in the molding process.

  In the embodiment of FIGS. 7 and 8, the counterpiece (50) passes through each of the first, optionally second, and third circular portions (51)-(53). Hole (through hole (54)). By having the through hole (54), an excess of the disk material such as hard wax extruded during molding can be easily discharged.

Any counterpiece (50) of the present invention is used as follows. A disk-shaped precursor that is in a solid state at room temperature and becomes flexible at a higher predetermined temperature, or a precursor in which a material including powder, liquid, or other shapes is made solid in a key cup (40). A body, for example, a disk-shaped precursor disk (10), is placed in the key cup (40), in which case the mold release material, preferably the mold release material is a key cup bottom surface (41) and the precursor disk ( 10) may be present between the upper surfaces;
The counterpiece (50) is placed in the tone hole (61) of the wind instrument, even if there is a thin film for delaying heat transfer between the lower surface of the precursor disk (10) and the counterpiece (50). Well, and /
Or there may be a release material, preferably a thin film release material, between the lower surface of the precursor disk (10) and the upper surface of the counterpiece (50);
Closing the tone hole (61) with the key cup (40) with the counterpiece (50) in between the tone hole (61) and the key cup (40);
Heating the precursor disk (10) to a predetermined higher temperature at which the disk material becomes flexible;
The key cup (40) was pressed against the tone hole (61), thereby reforming the precursor disk (10) to the shape of the stabilizing disk (20), with the counterpiece (50) being prepared. When the stopper (70) hits the bottom surface (41) inside the key cup (40) or a specific part of the key cup (40), the pressurizing operation is stopped. This makes it possible to automatically manufacture a stabilized disk (20) having a desired thickness, and also enables mass production mechanically. In particular, a screw-like stopper is preferable because it can be easily and repeatedly adjusted to a desired thickness by rotating the screw. ;
Cooling the stabilizing disc (20) to a temperature at which the disc material is in a solid state, lower than the predetermined higher temperature.

The counterpiece (50) can be manufactured from any material. Examples of these materials include, but are not limited to, metals, alloys, ceramics, composite ceramics, glass, graphite, composite graphite, carbon fiber composite materials, plastics, composite plastics, or thermosetting resin materials. It is not a thing. Specific examples of the plastic material as these hard materials include polycarbonate, polymethyl methacrylate, polyoxymethylene acetal, 4-methyl-1-pentene polymer or copolymer, but are not limited thereto. Not.
When heat is applied from the counterpiece (50) side, the heat conductivity of the counterpiece (50) may be good so that heat is sufficiently transferred to the entire precursor disk (10) through the counterpiece (50). desirable. This precursor disk (10) is ultimately a stabilizing disk with a non-flat top surface (21) that is particularly complementary to the non-flat surface of the bottom surface (41) inside the key cup (40). It is transformed into (20).

  When heat is applied from the cup (40) side, the thermal conductivity of the counterpiece (50) does not need to be discussed, but the counterpiece (50) is not covered by the inner bottom surface (41) of the cup (40). The distribution of heat applied to the precursor disk (10) from the cup (40) side is adversely affected so that the surface structure of the upper surface (21) of the stabilization disk (20) can be formed to be in a complementary relationship with the flat surface. It is desirable to be made from the materials exemplified above so as not to affect.

  As shown in the cross-sectional view of the flute body (60) in FIG. 9, the diameter of the first circular portion (51) is larger than the diameter of the tone hole (61) of the flute (60). On the other hand, when having the second circular portion (52), the diameter of the second circular portion (52) is such that the counterpiece (50) fits into the tone hole (61). It is smaller than the inner diameter.

  Also, as can be seen in the cross-sectional view of FIG. 9, the diameter of the first circular portion (51) is slightly smaller than the inner diameter of the cup (40), thereby counteracting the pressing and molding operations shown in FIG. The upper surface of the piece (50) will press the lower surface (22) of the stabilizing disk (20). As a typical example, the inner diameter of the flute cup (40) is about 1.5 mm to 2 mm larger than the diameter of the first circular portion (51), and the first circular portion (51) is a tone hole (61). About 1.5 mm to 2 mm larger than the diameter of

  The thickness of the first circular portion (51) is approximately the same as the thickness of the pad assembly (30). This is because when the pad assembly (30) is mounted in place of the counterpiece (50), the cup is placed on the counterpiece (50) at the same inclination angle as when actually using a wind instrument during the molding process. It is important to ensure that (40) is placed. In fact, the cup (40) is placed at the same height as when actually using the instrument, so that the tilt angle of this particular cup (40), possibly distorted, of the key cup mechanism exists. It will be completely imitated in the molding process. This produces a stabilizing disk (20) that is optimally shaped to fit the functional mechanics of one particular key cup (40). However, depending on the preference of the instrument player, the thickness of the first circular portion (51) may be slightly less than or slightly thicker than the thickness of the pad assembly (30). As shown in FIG. 9, when manufacturing a stabilization disk (20) having a desired thickness, a stopper (70) having a desired thickness corresponding to the stabilization disk (20) having a desired thickness is installed. Thus, when the precursor disk (10) is molded by applying a predetermined pressure to the counterpiece (50) used in the process of manufacturing the stabilizing disk (20), the stopper (70) is attached to the key cup (40). The pressurization operation can be stopped when it hits a specific portion of the inner bottom surface (41) or the key cup (40). This makes it possible to automatically manufacture a stabilized disk (20) having a desired thickness, and also enables mass production mechanically. In particular, a screw-like stopper is preferable because it can be easily and repeatedly adjusted to a desired thickness by rotating the screw.

  In the above-described embodiments of the present invention, the flute (60) is used as an example of a wind instrument. However, the present invention is not limited to this, and can be applied to any wind instrument that uses the opening and closing of the tone hole (61) when a musical instrument player performs. Examples include piccolo, clarinet, oboe, bassoon and saxophone.

  It should be noted that the material of the wind instrument for music in the present invention is not limited. This device is applicable to musical instruments made of any material such as plastic, wood, thermosetting resin or composite material thereof, aluminum or its alloy, silver or its alloy, gold or its alloy, brass or any other metal material. it can.

  The present invention is used in the industry of manufacturing musical wind instruments.

10 Precursor disk 11 Through hole 20 Stabilization disk 21 Stabilization disk upper surface 22 Stabilization disk lower surface 30 Pad assembly 40 Key cup 41 Key cup inner bottom surface 42 Washer 43 Screw 50 Counterpiece 51 First counterpiece Circular portion 52 Counterpiece second circular portion 53 Counterpiece third circular portion 54 Through hole 60 Flute 61 Tone hole 70 Stopper 71 Stopper recess 80 Handle

Claims (5)

  In the process of forming the stabilizing disk (20) installed to stabilize the pad assembly (30) placed in the key cup (40) in order to close the tone hole (61) of the wind instrument, the tone hole (61) Counterpiece (50) installed in the counterpiece (50), comprising at least one circular portion (51) and a stopper (70).   The counterpiece according to claim 1, comprising a second circular part (52) concentrically arranged with the first circular part (51) and having a smaller diameter than the first circular part (51). (50).   In the process of forming the stabilizing disk (20) installed to stabilize the pad assembly (30) placed in the key cup (40) in order to close the tone hole (61) of the wind instrument, the tone hole (61) ) And a first circular portion (51) arranged concentrically with the first circular portion (51). ) Having a smaller diameter than that of the tone hole (61), the key cup (40) having a diameter smaller than that of the tone hole (61). The diameter of the second circular portion (52) is smaller than the inner diameter of the tone hole (61) so as to be fully inserted into the tone hole (61). Listed cow Tapisu (50).   The counterpiece (50) according to any one of claims 1 to 3, wherein the stopper (70) is cylindrical.   The counterpiece (50) according to any one of claims 1 to 4, wherein the stopper (70) is screw-shaped.