JP6250416B2 - String winding instrument and stringed instrument including the same - Google Patents

Description

The present invention relates to a bobbin for tensioning a string on a neck of a stringed instrument and a stringed instrument including the same.

A stringed instrument such as a guitar or ukulele includes a member called a bobbin (peg) for adjusting the tension of a string stretched from the body to the neck on a head attached to the tip of the neck.

This bobbin has a configuration including a shaft portion around which a string is wound and a knob portion that rotates the shaft portion by rotating itself as in the techniques described in Patent Documents 1 to 3, for example. This bobbin winder is provided with a worm gear mechanism in which a worm (screw gear) is connected to a shaft portion, and a worm wheel (helical gear) meshing with the worm is connected to a knob portion. This is a structure in which the shaft rotates.

JP 2007-328245 A JP 2002-73011 A JP-A-9-269770

Generally used pincushion and the pincushion described in the above-mentioned patent document, because the rotational force of the knob is decelerated via the gear and transmitted to the shaft, tuning can be finely adjusted. However, a generally used bobbin and the bobbin described in the above patent document are made of metal. Therefore, there is a problem that the weight of the bobbin winder becomes heavy. In addition, since the number of parts such as through gears is increased, the structure is complicated, and there is a problem that the manufacturing cost is increased in that high-precision product processing is required.

In view of the above-mentioned problems, the present invention provides a string winding instrument for stringed instruments that can simplify the structure by reducing the number of parts and can accurately adjust the tension of the string to be stretched, and a stringed instrument including the string winding instrument. The purpose is to do.

A string winding instrument for a stringed instrument according to the present invention for solving the above problems is
A stringing instrument for a stringed instrument that is arranged on the body of the stringed instrument and stretches the string,
A rod-like string winding portion that is inserted through the through hole of the body and around which the end of the string is wound,
A knob connected to the string winding portion;
A ring-shaped shape, including a receiving portion through which the string winding portion is inserted inside the ring,
In the string winding part and the ring inside the receiving part, threaded grooves are formed to mesh with each other,
The knob portion and the receiving portion are disposed across the front and back of the body,
As the knob portion rotates, the string winding portion rotates, and the tension of the string to be stretched can be adjusted.
The string winding portion is screwed into the receiving portion, thereby holding the body and maintaining the tension of the string.

Further, the string winding portion is inserted in a rotatable state in the through hole of the body, and after both the knob portion and the receiving portion screwed to the string winding portion are in close contact with the body, It is preferable that the string winding portion can be rotated clockwise and / or counterclockwise through the knob to rotate the receiving portion together, and the string can be pulled and / or loosened. The string winding part preferably includes a string winding band around which the string is wound, and a space part extending from an end of the string winding band to an end of the thread groove of the string winding part. Further, it is preferable that the string protection member is mounted so as to be stacked on the receiving portion, and further, the material of the knob portion, the string winding portion and the receiving portion is wood, and among them, honoki, Wig, baboon Of camellia or walnut, it is preferable to combine any one or two or more.

A stringed musical instrument according to the present invention includes the bobbin winder having the above-described configuration.

According to the present invention, it is possible to provide a string winding instrument for a stringed musical instrument that can simplify the structure by reducing the number of parts and can accurately adjust the tension of a string to be stretched, and a stringed instrument including the string winding instrument. it can.

The perspective view which concerns on the stringed musical instrument of this invention. The disassembled perspective view of the bobbin provided in the stringed musical instrument of the present invention. The enlarged side view which shows the state in which the bobbin was attached to the body of a stringed musical instrument. The figure which shows the bobbin implement in the state with which the string protection member was mounted | worn. The figure which showed the force which acts on a bobbin.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. However, the present invention can be implemented in many different modes and should not be construed as being limited to the description of the embodiments described below.

First, an embodiment according to the present invention will be described in detail with reference to FIGS. 1 to 3. FIG. 1 is a perspective view of a stringed musical instrument according to the present invention, FIG. 2 is an exploded perspective view of a spool provided in the stringed musical instrument of the present invention, and FIG. It is an enlarged side view which shows the state.

First, the whole structure of the stringed instrument according to the present invention will be described with reference to FIG. 1A is a perspective view of a stringed instrument as viewed from the front side, and FIG. 1B is a perspective view of the stringed instrument as viewed from the back side. As shown in FIG. 1, the stringed musical instrument 1 of the present invention includes a neck 10, a body 20, a head 100, a string 30, a bobbin winder 40, and the like. The neck 10 includes a neck body 110, a fret 120, and a piece 130 for fixing and arranging the string 30. The body 20 includes an insertion hole 150 for passing the stretched string 30 from the front surface side to the back surface side of the stringed instrument 1, and the head 100 includes a string locking portion 140 for locking the string 30.

In a general stringed instrument, a bobbin is provided on the head 100 at the tip of the neck 10. However, in a stringed instrument according to the present invention, the bobbin 40 is not provided on the head 100 at the tip of the neck 10. The bobbin 40 is disposed on the body 20 near the portion where the player strokes the string.

In FIG. 1, three strings are stretched around the stringed instrument 1, but the number of strings is not limited to this. Further, although not shown in FIG. 1, a vibration resonance unit for resonating vibrations emitted from the strings may be included.

Next, details of the above-described bobbin winder 40 provided in the stringed musical instrument 1 will be described with reference to FIGS. 2 and 3. As shown in FIG. 3, the bobbin 40 is disposed through a through hole provided at a predetermined position of the body 20. Further, the configuration of the bobbin 40 includes a string winding part 410, a knob part 420, and a receiving part 430, as shown in FIG. The material of the string winding part 410, the knob part 420, and the receiving part 430 is preferably wooden from the viewpoint of reducing the weight of the member and the coefficient of friction described later. It is preferable to combine any one or two or more of wig, wig, walnut or walnut.

The string winding portion 410 has a rod-like shape, and is inserted into and fixed to the through hole of the body 20 when being incorporated into the stringed instrument 1. The string winding part 410 includes a thread groove 411 screwed into a receiving part 430 described later, a string insertion hole 412 through which an end of the string 30 is inserted, and a string winding band 413 around which the string 30 is wound. As shown in FIG. 2, the string insertion hole 412 and the string winding band 413 are provided at one end (upper side in FIG. 2) of the string winding portion 410.

Furthermore, it is preferable that the string winding part 410 includes a space part 414 extending from the end part 411A of the screw groove 411 to the end part 413A of the string winding wearing band 413. Even when the receiving portion 430 described later is screwed to a position near the end portion 411A of the screw groove 411 by inserting the space portion 414 at the boundary between the screw groove 411 and the string winding wearing band 413, the string winding It is possible to prevent the string 30 wound around the wear band 413 from being caught in the thread groove 411.

In addition, it is preferable that the diameter of the string winding part 410 is such that a very slight gap is formed when the string winding part 410 is passed through the insertion hole of the body 20. Thereby, even if the string winding part 410 is the state penetrated by the insertion hole of the body 20, the string winding part 410 can be rotated smoothly.

The knob portion 420 is a member that is connected to the string winding portion 410 and rotates it. As shown in FIG. 3, the knob portion 420 is disposed on the surface side of the body 20 and is connected to the other end portion (the lower end portion in FIG. 2) of the string winding portion 410. The string winding part 410 and the knob part 420 may be formed separately or connected together, or may be formed integrally. In the present embodiment, the string winding portion 410 and the knob portion 420 are integrally formed. However, the present invention is not limited to this, and for example, a hole for fitting the other end portion of the string winding portion 410 into the knob portion 420. There may be a method in which the string winding part 410 is inserted into the string winding part 410 and the two parts are connected to each other. A thread groove is provided so that the string winding part 410 and the knob part 420 can be screwed together. A method of connecting the two may be used.

The receiving portion 430 is a member that is screwed into the string winding portion 410 and holds the tension of the string 30 wound around the string winding portion 410 constant. As shown in FIG. 2, the receiving portion 430 has a ring shape and is configured to include an insertion hole 431 for inserting the string winding portion 410. On the surface of the insertion hole 431, a screw groove 432 that is screwed with the screw groove 411 of the string winding portion 410 is formed. Further, as shown in FIG. 3, the receiving portion 430 is disposed on the back side of the body 20.

When the screw groove 411 of the string winding portion 410 and the screw groove 432 of the receiving portion 430 are screwed together and the knob portion 420 and the receiving portion 430 move to a position where they are in close contact with the front and back of the body 20, the tension of the string 30 is constant. It is possible to hold it.

Next, as shown in FIG. 4, it is preferable to attach a string protection member 440 so as to be stacked on the receiving portion 430. (The string protection member 440 is mounted in a state of being in contact with the end surface 433 of the receiving portion 430.) FIG. 4A is a view of the receiving portion 430 as viewed from above, and FIG. FIG. 4C is a cross-sectional view of the bobbin 40 in a state where the string 30 is stretched, and FIG. It is a perspective view of the bobbin winder 40.

If the string protection member 440 is not attached, the string 30 and the receiving portion 430 are in direct contact. When the peripheral edge of the receiving part 430 is in an angular state, excessive pressure is applied to the contact portion of the string 30 with the receiving part 430. For this reason, the string 30 is worn out violently. As described above, wearing the string protection member 440 can prevent the strings 30 from being worn.

In the present embodiment, as the string protection member 440, a washer in which a hole for inserting the string winding portion 410 is formed at the center is used. Moreover, it is preferable that the material of the string protection member 440 is wood or a plastic material.

The operation of the bobbin 40 will be described. First, the string winding portion 410 in a state where the knob portion 420 is connected is disposed on the front surface side of the body 20, and the receiving portion 430 is disposed on the back surface side of the body 20. Thereafter, the string winding portion 410 is inserted into the insertion hole of the body 20 and the insertion hole 431 of the receiving portion 430.

In this state, the string 30 is passed through the string insertion hole 412 of the string winding portion 410 and the string 30 is locked so that the string 30 does not come out of the string insertion hole 412. At this time, the string 30 is still loose.

Next, if the knob | pick part 420 is rotated manually, for example, the string winding part 410 connected with this will also rotate in conjunction. As a result, the receiving portion 430 moves in a direction approaching the back surface of the body 20, and the string 30 is wound around the string winding band 413 of the string winding portion 410, and the tension of the neck 10 of the stringed instrument 1 is increased. In addition, the head 100 is stretched.

The axial movement of the receiving portion 430 proceeds until it is in close contact with the back surface of the body 20. As described above, in this state, the reverse rotation of the string winding portion 410 due to the tension of the string 30 wound around the string winding band 413 can be prevented, and the tension of the string 30 can be kept constant. Become.

When the diameter of the string winding part 410 is set to an extent that allows a very small gap with respect to the insertion hole of the body 20, the knob part 420 can be further rotated, thereby rotating the string winding part 410. be able to. As a result, the string 30 can be further pulled, and the tension can be finely adjusted. Therefore, tension adjustment can be performed with high accuracy.

Further, a description will be given with reference to FIG. In the bobbin winder 40 according to the present embodiment, the string winding part 410 and the knob part 420 connected to the string winding part 410 integrally form a bolt shape, and the receiving part 430 has a nut shape. Is used to sandwich the body 20. In general, when a bolt and a nut are used, when the male screw of the bolt and the female screw of the nut are tightened, a compressive force 70 acts on the object to be fastened (the body 20 in this embodiment), and an axial force (tensile) is applied to the bolt. Force) 80 is generated. In addition, the screw threads of the male screw and the female screw, the bearing surface of the bolt and the surface of the object to be fastened, and the nut and the surface of the fastened object come into contact with each other, and a frictional force is generated. Also, a washer is often used between the bolt or nut and the object to be fastened to enhance the tightening effect, but this is not used in this embodiment.

The bobbin 40 according to the present embodiment is not only for fastening a fastened object with a bolt and a nut so as not to cause displacement. The bobbin winder 40 according to the present embodiment rotates the knob 420 in the direction 60 shown in FIG. 5A to tighten the string 30 wound around the string winding part 410, or in FIG. 5B. It is necessary to tune by adjusting the tension of the string by loosening it in the direction indicated by 50. Therefore, when the knob portion 420 is rotated clockwise or counterclockwise, the receiving portion 430 corresponding to the nut must rotate together in the direction 50 shown in FIG. At this time, if the knob part 420 and the receiving part 430 are simply rotated together, the frictional force without contacting the seating surface of the knob part 420 and the surface of the object to be fastened, and the surface of the receiving part 430 and the object to be fastened. However, in such a case, since the tensile force is acting on the string 30, the string winding portion 410 is reversely rotated by the tension of the string 30, the string 30 is loosened, and stable tuning cannot be performed.

Therefore, it is necessary that the male screw of the string winding portion 410 formed integrally with the knob portion 420 and the female screw of the receiving portion 430 are tightened and fixed so as not to cause displacement when a desired string tension is obtained. When the desired string tension cannot be obtained and further tuning is performed, torque is applied and tightened or loosened in the opposite direction so that the knob 420 and the receiver 430 rotate together. A certain amount of frictional force is required between the seat surface of the object and the surface of the object to be fastened and between the receiving portion 430 and the surface of the object to be fastened. This frictional force varies depending not only on the seating surface of the knob 420 and the material of the receiving portion 430 but also on the surface of the body 20 that is the object to be fastened, but the body 20 of this embodiment is a general guitar. It is the same wood used in the body part. Further, urethane coating may be applied to the surface of the body 20 in order to adjust the frictional force. Note that the bobbin 40 according to the present embodiment is not only for fastening the object to be fastened with bolts and nuts so as not to cause displacement, but also for rotating together, so a washer is do not use.

As a result of repeated trial and error by the inventor of the present invention, the material of the knob portion 420 (string winding portion 410 formed integrally therewith) and the receiving portion 430 is preferably wood, and among the wood, Magnoliaceae genus honoki (scientific name: Magnolia hypoleuca), wig family wig wig (scientific name: Cercidipyllum japonicum) Of wood was found to be optimal.

As described above, the bobbin winder 40 according to the present invention has a very simple structure, and can significantly reduce the weight as compared with a general bobbin winder used for a stringed musical instrument. In addition, since the bobbin 40 according to the present invention can firmly hold the tension of the tensioned string 30, after the tensioning, the string 30 is bent and the scale is not easily distorted.

DESCRIPTION OF SYMBOLS 1 String musical instrument 10 Neck 20 Body 30 String 40 Pincushion 100 Head 410 String winding part 411 Screw groove 412 String insertion hole 413 String winding wearing constriction 414 Space part 420 Knob part 430 Reception part 431 Insertion hole 432 Screw groove 440 String protection member

Claims (7)

A stringing instrument for a stringed instrument that is arranged on the body of the stringed instrument and stretches the string,
A rod-like string winding portion that is inserted through the through hole of the body and around which the end of the string is wound,
A knob connected to the string winding portion;
A ring-shaped shape, including a receiving portion through which the string winding portion is inserted inside the ring,
In the string winding part and the ring inside the receiving part, threaded grooves are formed to mesh with each other,
The knob portion and the receiving portion are disposed across the front and back of the body,
As the knob portion rotates, the string winding portion rotates, and the tension of the string to be stretched can be adjusted.
A string winding instrument for a stringed instrument, wherein the string winding part is screwed into the receiving part to hold the body and maintain the tension of the string. The string winding portion is inserted into the through hole of the body in a rotatable state,
Even after both the knob and the receiving part screwed into the string winding part are in close contact with the body, the string winding part is rotated clockwise and / or counterclockwise through the knob. The string winder according to claim 1, wherein the receiving portion can be rotated together to pull and / or loosen the string. The string winding part is
A string winding wrap around which the string is wound;
The string winding instrument for a stringed instrument according to claim 1, further comprising: a space portion extending from an end portion of the string winding wear constriction to an end portion of the thread groove of the string winding portion. The string winder according to any one of claims 1 to 3, wherein the string protection member is mounted so as to be stacked on the receiving portion. The string winding instrument for a stringed instrument according to any one of claims 1 to 4, wherein a material of the knob portion, the string winding portion, and the receiving portion is wood. The string winding instrument for stringed instruments according to claim 5, wherein the knob part, the string winding part, and the receiving part are made of a combination of one or more of hornet, wig, honeybee, and walnut. A stringed instrument comprising the bobbin according to any one of claims 1 to 6.

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