JP4322298B2 - Violin bow - Google Patents

Description

  The present invention relates to an inexpensive violin bow that can be used for practice, educational materials, or entertainment.

Conventional violin bows have been designed to form grips, heels, bowstring locking parts, etc. while taking into account the overall center of gravity of the main body with a single bar. It requires advanced processing technology and dedicated tools, and is expensive. For this reason, it has been impossible for ordinary people to enjoy playing and playing violin.
Special Table 2000-513828

  An object of the present invention is to obtain a bow of a violin that can be easily manufactured by a general person with a simple tool.

  According to the first aspect of the present invention, pipes having different diameters are fitted to each other, a grip portion having a predetermined length is formed by a large diameter side pipe, and a flange portion having a predetermined length is formed by a small diameter side pipe. The first locking tool is provided at the front part so that the movement can be adjusted in the front-rear direction, the second locking tool is provided integrally at the front end of the collar part, and both ends of the bowstring are locked to the first and second locking tools. The center of gravity position of the bow is set to a predetermined position by adjusting the amount of fitting between the large diameter side pipe and the small diameter side pipe.

  According to the first aspect of the present invention, since the first pipe having a different diameter and the pipe on the small diameter side are fitted to form a bow, it can be easily formed using a commercially available pipe material. Since the center of gravity position of the bow is set by adjusting the fitting amount between the first pipe and the small diameter side pipe, the center of gravity position can be easily set.

  Embodiments of the present invention will be described below with reference to the drawings. In the drawings, FIG. 1 is a side view of a violin to which the present invention is applied, FIG. 2 is a cross-sectional side view of an essential part showing a coupling portion between a neck and a body, and FIG. 3 is an enlarged cross-sectional view of FIG. 4 is a sectional side view showing the rear side of the trunk, FIG. 5 is a partial plan view of a violin with a part broken away, and FIG. 6 is a partial side view of a bow showing an embodiment of the present invention.

  In FIG. 1, reference numeral 1 denotes a violin, which includes a trunk portion 2, a neck 10, a fingerboard 15, a tail piece 20, a string 24, and the like. The body 2 has a back plate 3 and a front plate 4 that are cut into a plan view shape, facing each other, and is fixed integrally with each other via a side plate 5 that is erected and fixed along its peripheral edge. As shown in FIG. 5, a hole 4a for sound output is formed in 4.

  In this example, the back plate 3 is formed by a flat plate made of fiberboard having a thickness of about 4 mm, the front plate 4 is formed by a flat plate made of paulownia having a thickness of about 5 mm, and the side plate 5 has a thickness of about 2 mm. It is formed by bending a veneer (single plate). In this case, as shown in FIG. 5, the side plate 5 is formed by dividing the front portion 5a, the intermediate portion 5b, and the rear portion 5c, and the front and rear ends of the intermediate portion 5b are brought into contact with the end portions of the front portion 5a and the rear portion 5c. The contact portions C1 and C2 between the intermediate portion 5b, the front portion 5a, and the rear portion 5c are sharpened. Further, the front end portion of the side plate 5, that is, the front end portions of the left and right front portions 5a, 5a are separated from each other to form a rectangular insertion port 6 into which the base side of the neck 10 is fitted. In addition, it is more preferable that the side plate 5 is formed of a double-layered plywood because the appearance can be improved without significantly reducing the curvature.

  As shown in FIG. 3, the neck 10 has a semicircular cross section as shown in FIG. 3, and has a plug 11 at the base (rear end) and a head 12 at the front end. As shown in FIGS. 1 and 2, the insertion portion 11 is formed by cutting out the upper and lower portions of the base of the neck main body 10a in a stepped and parallel manner, and the left and right side surfaces 11c and 11c (FIG. 1) are parallel surfaces. A rectangular block shape is formed, and the insertion portion 11 is fitted into the insertion port 6 described above, and the front portion of the front plate 4 and the back plate 3 are formed on the upper surface 11a and the lower surface 11b. The front portions are overlapped and fixed integrally, and the front ends of the side plates 5 are brought into contact with the left and right 11c and 11c of the insertion portion 11 to be fixed integrally. As a result, the contact area between the front plate 4 and the back plate 3 is increased so that the neck 10 is firmly coupled to the body 2 and the bending rigidity upward of the neck 10 is increased.

  As shown in FIG. 2, the head portion 12 of the neck 10 is formed with an elongated concave portion 12a in the front-rear direction on the upper surface side, and four bobbins 13 can be rotated on both left and right sides of the head portion 12 where the concave portion 12a exists. Attach to. Each bobbin 13 has a knob 13b attached to the end of a mandrel 13a as a disc body obtained by cutting a wooden round bar into a short length, and this disc body is fitted and fixed perpendicularly to the mandrel 13a. Thereby, each bobbin 13 can be easily formed by two types of round bars having different diameters.

  A fingerboard 15 is fixed to the upper surface of the neck main body 10a. As shown in FIG. 3, the fingerboard is formed by laminating a plurality of thin plate materials, for example, four thin plate materials and curving them in a circular arc shape. Thereby, a highly accurate circular arc surface can be formed without requiring a cutting process.

  The tail piece 20 is attached to the rear side of the body 2 described above. As shown in FIGS. 4 and 5, the tailpiece 20 has four front locking holes 20a penetratingly formed at a predetermined pitch on the left and right at the front end of a rectangular plate that is long in the front and rear direction. Two rear locking holes 20b are formed through the left and right, and the rear end of the string 24 is locked in the front locking hole 20a. Further, a tension member 21 such as a wire rope is inserted into the rear locking hole 20b, and both ends thereof are positioned on the upper side of the tail piece 20, and this portion is a fastening made of a soft metal pipe such as lead or copper. After being inserted into the tool 22, the fastener 22 is caulked to fasten the both ends, and the tension body 21 is formed into a ring shape.

  The ring-shaped tension member 21 is engaged with two slits 4b formed in the rear end portion of the front plate 4 and then locked and protruded and fixed to the rear surface of the body portion 2 as shown in FIG. Lock to the pin 23. The locking pin 23 is fitted and fixed to a reinforcing block 7 fixed to the rear portion of the body portion 2. In FIG. 4, reference numeral 8 denotes a piece that is erected and fixed to the front plate 3, and receives a string 24 and transmits the vibration of the string 24 to the front plate 4. Reference numeral 9 denotes a reinforcing rib fixed to the back surface of the front plate 3.

  The bow that plays the violin 1 is as shown in FIG. In FIG. 6, reference numeral 25 denotes a bow, a grip portion 25 a having a predetermined length is formed by the large-diameter pipe 26, a small-diameter small-diameter pipe 27 is fitted into the pipe 26, and the small-diameter-side pipe The front part of 27 is protruded forward (leftward in FIG. 6), and a flange 25b having a predetermined length is formed by the protrusion. The first locking tool 28 is attached to the middle part of the grip part 25a so as to be able to move back and forth, and the second locking tool 33 is locked (fixed) to the tip of the flange part 25b. Then, the front end portion of the bowstring 35 is fixed to the second locking tool 33, and the rear end portion of the bowstring 35 is locked to the first locking tool 28.

  The large-diameter side pipe 26 and the small-diameter side pipe 27 are formed by improving a slide-type support for maintaining the posture of the plant in this example. The length of the large-diameter side pipe 26 is set to a predetermined length. The length of the center of gravity of the bow 25 becomes a predetermined position on the base (rear) side by adjusting the fitting amount by which the pipe 27 on the small diameter side is fitted to the pipe 26 on the large diameter side. The length of the flange 25b is set by cutting the tip of the small-diameter pipe 27 at a predetermined location. The grip portion 25a and the flange portion 25b may be formed by fitting (adding) two or more pipes having different diameters to each other.

  The first locking tool 28 is as follows. That is, the mounting plate 29 is fixed to the large-diameter pipe 26 through the holder 29a, the guide 30 is fixed to the mounting plate 29, and the slide pin 31 having the hook 31a is inserted into the guide 30 so as to be slidable back and forth. Then, the small screw 32 is connected to the rear end of the slide pin 31, and the small screw 32 is inserted into the holder 29a so as to be slidable in the front-rear direction. Screw together. Then, after the rear end of the bowstring 35 is locked to the hook 31a, the nut 32a is rotated forward and backward, and the slide pin 31 is moved in the front-rear direction via the machine screw 32, thereby adjusting the tension of the bowstring 35. . The bowstring 35 is formed by collecting thin fishing lines.

  As described above, the bow of the violin according to the present invention can be easily formed by a general person with a simple tool.

It is a side view of the violin to which the present invention is applied. It is a principal part cross-sectional side view which shows the coupling | bond part of a neck and a trunk | drum. FIG. 3 is an enlarged sectional view taken along the line III-III in FIG. 2. It is a cross-sectional side view which shows the rear part side of a trunk | drum. It is a partial top view of the violin which fractured | ruptured a part. 1 is a partial side view of a violin bow showing an embodiment of the present invention. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Violin 2 trunk | drum 3 back plate 4 surface plate 4a hole 4b slit 5 side plate 5a front part 5b middle part 5c rear part 6 insertion slot 7 block 8 piece 9 reinforcement rib 10 neck 11 insertion part 11a upper surface 11b lower surface 11c right and left surface 12 Head part 12a Recess 13 Bobbin 13a Mandrel 13b Knob 15 Finger plate 20 Tailpiece 20a Front locking hole 20b Rear locking hole 21 Tension body (wire)
DESCRIPTION OF SYMBOLS 22 Fastener 23 Locking pin 24 String 25 Bow 25a Grip part 25b Groom part 26 Large diameter side pipe 27 Small diameter side pipe 28 1st locking tool 29 Mounting plate 29a Holder 30 Guide 31 Slide pin 31a Hook 32 Machine screw 32a Nut 33 Second Locking Tool 35 Bow String

Claims (1)

Pipes (26, 27) having different diameters are fitted to each other, a grip portion (25a) having a predetermined length is formed by the large-diameter pipe (26), and a predetermined length of ridge is formed by the small-diameter pipe (27). Forming a portion (25b), the grip portion (25a) is provided with a first locking tool (28) that can be moved in the front-rear direction, and the second locking tool (33) is integrated with the front end of the flange portion (25b). The both ends of the bowstring (35) are locked to the first and second locking tools (28, 33), and the large-diameter side pipe (26) and the small-diameter side pipe (27) are fitted. A violin bow characterized by adjusting the total amount and setting the center of gravity of the bow (25) to a predetermined position.

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