JP2021081675A - Single string traction device using spacer and bend lever - Google Patents

Abstract

To provide an apparatus which gives enjoying string bender playing in a comfortable position without specifying a posture such as standing, sitting, or lotus coition.SOLUTION: The present invention is a string bender similar to a palm bend type, which adopts a specification in which a spacer molded from a lightweight metal or synthetic resin with a through hole which can avoid contact with a screw head protruding from a bridge plate is attached in close contact with a vertical surface of the bridge plate by fitting to the screw head to ensure stable operation of a bend lever. The spacer serves as a fulcrum when pushing down the bend lever, and a stopper is installed to add a mechanism which can adjust pitch. A notch is provided in the bend lever to avoid the screw for the stopper in consideration of string breakage, enabling string bender playing selecting either a second or a third string.SELECTED DRAWING: Figure 1

Description

The present invention relates to a string bender in playing a guitar.

Since the string bender was developed in the 1960s, various types of string benders have been put on the market in an attempt to reproduce the playing style of pedal steel guitars on electric guitars. Typical methods are shoulder strap type, hip shot type, and palm bend. There are types and so on.

Common to all methods is a mechanism that follows the method developed in the 1960s and pulls the string 23 backward from the bridge saddle 29 to increase tension and raise the pitch by a full or semitone. ing. Hereinafter, the operation of raising the pitch by a semitone or a full tone is referred to as bending or bending. The type that bends only the 2nd string (B string) is called the B bender, the type that bends only the 3rd string (G string) is called the G bender, and there are BG vendors that support both the 2nd and 3rd strings. , String benders that can expand multiple strings to a mechanism that can be bent for each string are also manufactured.

Generally, most guitars equipped with a string bender are electric guitars, and in the case of an electric guitar using a bridge plate 44 for 3 saddles, the neck is pulled from the string pulling mechanism provided behind the bridge plate 44. As shown in FIG. 14, in order to hang the string 23 stretched on the string winding machine 38 of the head portion on the bridge saddle 29 without contacting the vertical portion 33 of the bridge plate 44, the vertical portion 33 of the bridge plate 44. A groove is cut in the guitar or a hole for stringing is made. Further, the air bleeding bolt 23 having a hollow structure shown in FIG. 15 may be used to replace the function of the hole for string passage.

The shoulder strap type is a method corresponding to the description of Patent Documents 5 and 8, and is a strap that is integrated with the cam by digging into the back part of the body of the guitar and embedding a set of string pulling mechanism. The pin 36 is attached to the shoulder strap 37 and moved up and down, and the axis of the string pulling mechanism provided behind the bridge saddle 29 connected by the cam and the shaft is changed to rotation or up and down movement to change the pitch. .. This method requires high machining accuracy and is expensive.

The hip shot type is a method equivalent to the description in Patent Document 6, in which a special instrument that is a string pulling mechanism using the principle of leverage is fixed to the rear of the bridge saddle 29, and a lever that is a power point is pressed against the waist to move the pitch. To operate. It requires special equipment but is easy to install.

The palm bend type corresponds to Non-Patent Document 4 or Non-Patent Document 6, and the existing bridge plate 28 is removed and replaced with a dedicated bridge plate integrated with a pulling mechanism utilizing the principle of leverage. The pitch is manipulated by having the end ball around which the strings are wound received by a hole or groove that stops the strings, which is the point of action, and pushing down the lever, which is the point of effort, with the palm of the hand.

JP 2017-102419 US20140196590A1 US20160232881A1 US3479917A US3512443A US4535670A US5140884A US5481954A US7696420B2 US9251768B2 US9530388B1 US9607589B2

https://en.wikipedia.org/wiki/B-Bender http://stringbender.com/classic.php https://shop.fender.com/ja-JP/articles/articles-pitch-perfect-a-history-of-the-b-bender https://store.duesenberg.de/en/hardware/multibender/76/duesenberg-multibender http://handbendersweden.com/instructions/ https://www.jacksonsteelguitar.com/product/the-edge-pitch-changer-telecaster/ http://rollingbender.com/admin/index.php/our-products/ https://b-blender.com/?page_id=131 https://bowdenbbenders.com/

Many string benders use springs 31 or springs for the mechanism in order to raise the pitch and then quickly return to the original pitch, and because it is necessary to make the structure robust, steel is used for the members of the guitar body. Since it is incorporated, the weight becomes heavy, and when playing for a long time in a standing position, the burden on the performer's shoulders increases. In addition, the operation of string venters other than the palm bend type is not suitable for the sitting position (especially the sitting position), and even if it can be operated, there are restrictions on the posture.

In the present invention, a specification has been devised in which a string pulling device having a shape that has both a hole for stopping a string that acts as a point of action of a lever and a lever that serves as a point of effort is directly attached to the vertical surface 34 of the bridge plate 28. As shown, since the head of the octave adjusting screw 30 protrudes from the vertical surface 34, the pulling device cannot be operated in a stable state due to imbalance. Hereinafter, the lever which is a string pulling device will be referred to as a bend lever 12.

If you just push down the bend lever 12 with your palm until you reach the desired pitch, you will not be able to keep your hands in the same position and the pitch will become unstable and the pitch will not be accurate. It is necessary to have a mechanism that can be fixed and maintained when the pitch reaches.

Breakage of the string 23 is likely to occur at an acute angle point where the string winding machine 38 is in point contact, or at a winding point where the end pole 25 is wound. In the present invention, by repeatedly operating the bend lever 12, the load on the string 23 due to stress is applied. Is significantly more likely to be applied to the portion. In addition, the string 23 may be bent in the path of the string, or the string 23 may be broken due to metal fatigue or wear due to contact with the corners of the metal surface or the edge of the hole, thus reducing the load on the string 23. At the same time, it is necessary to avoid or delay the breakage of the string 23.

Guitars generally start with the treble part, 1st string (E string), 2nd string (B string), 3rd string (G string), 4th string (D string), 5th string (A string), and bass part 6th string (E). Most of the guitars equipped with a string bender can bend only the 2nd string (B string). There are instruments that can bend each string by adding 1st string (E string) and 3rd string (G string) to the bending of the 2nd string (B string), but it is necessary to remove the existing instrument and replace it. .. If possible, I would like to install an instrument that has the function of bending the 3rd string (G string) on a guitar that already has a string bender for the 2nd string (B string).

The appropriate length and height of the bend lever 12 have a preference for each performer, and a mechanism capable of correcting the bend lever 12 is desired.

In the present invention, since the palm bend type operated by the palm is adopted, there are few restrictions on the posture.

In the present invention, since the spring 35 and the spring are not used for the mechanism for raising the pitch by bending and then returning to the original pitch, high rigidity is not required in the specifications, and heavy members are not used.

A spacer 1 is placed between the bending lever 12, which is a string pulling device, and the screw head of the octave adjusting screw protruding from the vertical surface 34 of the bridge plate 28. The spacer 1 is provided with through holes 7 having a diameter and depth in which the screw heads are buried, which is the same number as the number of octave adjusting screws 30 for the bridge saddle 29 mounted on the bridge plate 28. If the spacer 1 is fitted into the screw head and attached, a surface without new protrusions can be provided behind the vertical surface 34 of the bridge plate 28. As a result, the bend lever 12 can be brought into close contact with the spacer 1 at the starting point 10, so that even if the bend lever 12 is operated with the corner of the spacer 1 as the fulcrum 9, stable operation without rattling can be performed.

A screw hole 6 dedicated to the stopper is provided through the spacer 1 in the plate thickness direction, and similarly, the screw hole dedicated to the stopper is provided on the vertical surface 34 of the bridge plate 28 so as to overlap and be connected to the position of the screw hole provided in the spacer 1. A screw hole 6 is provided so as to penetrate in the plate thickness direction, a screw having a large collar is attached as a stopper 26 from the spacer 1 side, the bridge plate 28 is penetrated, and the screw is fastened and fixed with a nut 27. The stopper 26 is used to finely adjust the movable range of the bend lever 12 by the screwing amount of the stopper 26 when the bend lever 12 is operated with the corner of the spacer 1 as the fulcrum 9, and bends to raise the pitch by a semitone or a full tone. The end point 11 of is determined.

A string through hole 4 for the 2nd string and a string through hole 5 for the 3rd string are passed through the spacer in the plate thickness direction. The performer selects a hole for threading either the 2nd string (B string) or the 3rd string (G string), attaches the bend lever 12, and passes the string 23.

The bend lever 12 is provided with only one hole for stopping the string, and when the string 23 is stretched through the string 23 and the bend is repeated, the string 23 is wound around the end ball 25 stopped at the hole for stopping the string, which is the point of action. The string 23 is stretched from the rewinding portion 24 so that it can be unwound by stress, and the tension gradually loosens or the wire is easily broken due to metal fatigue. A stop hole 13 and a string through hole 14 are used, and the load applied to the string 23 is distributed by passing the string through the two holes.

There is a concern that the string 23 may bend or come into contact with the metal portion at the edge of the hole at the string through hole 14 of the bend lever 12, and as a remedy for the bend, the string stop hole 13 of the lever may be used as a string through hole. A string guide 16 having a gentle curve is provided between 14 to allow the string 23 to crawl through, and a synthetic resin tube is fitted into the string through hole 14, and the string 23 and the metal part at the edge of the hole are fitted. Take measures to avoid contact with the strings.

The bend lever 12 in the present invention can be attached to the 3rd string side to function as a string bender for the 3rd string (G string), and as shown in FIG. 17, it is already a string for the 2nd string (B string). It can also be installed side by side as a 3-string (G-string) bend lever 12 on a guitar equipped with a bender. In this case, since it is necessary to secure a path for the 2nd string (B string), a groove 39 for passing the 2nd string (B string) is provided in the bend lever 12.

In order to increase the degree of freedom in the position of the hand that operates the bend lever 12, a hole for mounting an extension bar 41 or a grip ball 42 that can correct the length or the like is provided so as to penetrate in the plate thickness direction.

In the present invention, the corner of the spacer 1 fitted to the screw head of the octave adjusting screw 30 on the vertical surface 34 of the bridge plate 28 is used as a fulcrum 9, and the bending lever 12 is pushed down by the palm to raise the pitch. it can. If the force applied to the lever is eliminated, the pitch returns to the original position only by the tension of the string 23, so unlike other methods, a spring 35 or a spring is not required, and a steel material for maintaining strength is not required, so that the weight can be reduced. At the same time, the number of parts is small. There are no restrictions on posture when operating with the palm of the hand, and there is no problem in playing in a sitting position (especially in the sitting position) or in a standing position.

FIG. 1 is a schematic view showing the arrangement of the spacer, the bend lever, and the stopper. FIG. 2 is a partially enlarged view showing a state in which the bend lever is pushed down. FIG. 3 is a three-view view of the spacer for the three saddles. FIG. 4 is a three-view view of the spacer for the 6 saddle. FIG. 5 is a three-view view of the bend lever having an obtuse angle inclination. FIG. 6 is a three-view view of the bend lever bent into a shape having an arc in a part. FIG. 7 is a three-view view of the string guide. FIG. 8 is a schematic view in which the string guide is attached to the bend lever shown in FIG. FIG. 9 is a schematic view in which the string guide is attached to the bend lever shown in FIG. FIG. 10 is a three-view view of the string guide bush. FIG. 11 is a reference usage state diagram in which the string guide is attached to the bend lever. FIG. 12 is a rear perspective view of the bend lever before the string guide is attached. FIG. 13 is a front perspective view before attaching the string guide to the bend lever. FIG. 14 is a schematic view when a spacer and a bend lever are attached to the bridge plate for 3 saddles. FIG. 15 is a schematic view when a spacer and a bend lever are attached to the bridge plate for 6 saddles. FIG. 16 is a conventional example of a shoulder strap type string bender. FIG. 17 shows an example in which a spacer and a bending lever are provided on an existing string bender. FIG. 18 is a detailed view of the bridge plate portion in FIG. FIG. 19 is a schematic view in which an extension bar is attached to the bend lever. FIG. 20 shows an example in which a grip ball is attached to a bend lever. FIG. 21 is a schematic view of the bridge plate.

The bridge plate 28 for an electric guitar has a model other than those shown in FIGS. 14 and 15, but in the present invention, an octave adjusting screw 30 for moving the bridge saddle 29 and adjusting the pitch is attached to the vertical portion 33. The bridge plate 28 is defined as a general term for a certain device.

The present invention is composed of a spacer 1, a bending lever 12, and a stopper 26. The spacer 1 is a thick plate-like object of the octave adjusting screw 30 protruding from the vertical surface 34 of the bridge plate 28, provided with a through hole 7 having a diameter and depth for the screw head to be buried, and is made of metal or synthetic resin. By fitting it into the screw head and mounting it in close contact with the vertical surface 34 of the bridge plate 28, the spacer 1 serves as a cushioning portion where the bending lever 12 does not come into direct contact with the screw head, and also bends. It will have a fulcrum 9 when pushing down the lever 12.

Since the bridge plate 28 has three models and six models of the octave adjusting screw 30 and the bridge saddle 29, through holes 7 are provided in the plate thickness direction according to the number and positions of the octave adjusting screws 30 for each model. Create spacer 1. Hereinafter, the spacer corresponding to the three types of the octave adjusting screw 30 and the bridge saddle 29 will be referred to as the spacer 2 for the three saddles, and the spacer corresponding to the six types will be referred to as the spacer 3 for the six saddles.

The spacer 2 for the 3 saddle is provided with a string through hole 4 for the 2nd string and a string through hole 5 for the 3rd string, respectively, penetrating in the plate thickness direction. Similarly, the vertical portion 33 of the bridge plate 44 for the 3-saddle is also provided with a string through hole 4 or a string through groove 32 for the 2nd string and a string through hole 5 for the 3rd string, respectively, penetrating in the plate thickness direction.

In the 6-saddle spacer 3, if the octave adjusting screw 30 of the bridge saddle 29 mounted on the 6-saddle bridge plate 45 is replaced with an air bleeding bolt 31 having a hollow structure, the air bleeding bolt 31 itself becomes a through hole for the strings. It functions and can have the same function as the through hole for the 2nd and 3rd strings provided in the spacer 2 for the 3rd saddle.

A synthetic resin string guide tube 8 is attached to the 2nd string through hole 4 or the 3rd string through hole 5 of the 3 saddle spacer 2. This prevents the string 23 stretched from the bend lever 12 from coming into contact with the edge of the string threading hole of the spacer 2 by the time it reaches the bridge saddle 29, and the string 23 is used for stringing the spacer 2. This is to pass it closer to the center of the hole.

The stopper dedicated screw holes 6 are provided through the 3 saddle spacers 2 and the 6 saddle spacers 3 in the plate thickness direction, respectively. Similarly, the bridge plate 28 corresponding to the 3-saddle and the 6-saddle is also provided with the stopper-dedicated screw hole 6 penetrating in the plate thickness direction so as to be aligned with the position of the stopper-dedicated screw hole 6 provided in each spacer.

As shown in FIG. 2, the stopper 26 employs a screw having a large head of a brim, and the bridge plate 28 and the spacer 1 are attached from the stopper-dedicated screw hole 6 of the spacer 1 in a state of being in close contact with the bridge plate 28. Penetrate the stopper-dedicated screw hole 6 of 28 and fasten it with the nut 27 to fix it so that there is no rattling. The stopper 26 can finely adjust the pitch by adjusting the screwing amount and changing the position of the end point 11 reached by pushing down the bend lever 12 placed immediately after the spacer 1.

The bend lever 12 is a metal plate formed in a T shape bent into an obtuse angle or a lateral fold shape having an arc in part as shown in the side view shown in FIG. 5 or 6, and is a spacer. Immediately after 1, the spacer 1 is placed in close contact with the string 23, and the angle at which the spacer 1 is used as the fulcrum 9 is used to determine the pulling amount for raising the pitch of the string 23. At the position where the bend lever 12 is pushed down, an appropriate angle is maintained so that the lever does not come into contact with the bridge saddle 29, and bending processing is performed in consideration of playability.

The bend lever 12 is provided with two holes for string passing through in the plate thickness direction. One is a string stop hole 13, and the other is a string through hole 14. By passing the string 23 from the string stop hole 13 to the string through hole 14, it is possible to avoid applying a load due to tension to one point and reduce the load on the string 23.

In the string through hole 14 portion of the bend lever 12, there is a concern that the string 23 may be bent, and in order to avoid this, the string path having the shape of an arc or an elliptical arc shown in the side view of FIG. 7 is gentle. The string guide 16 that guides the curve is mounted between the string stop hole 13 and the string through hole 14.

8 and 9 show a schematic view in which the string guide 16 is attached to the bend lever 12. One hole for string passage is also provided on the string guide 16 side in accordance with the position of the string stop hole 13 provided on the bend lever 12. The end 19 of the string guide 16 is bent so as to be located at the upper end of the string through hole 14 of the bend lever 12. The string guide 16 and the bend lever 12 are joined by rivets 20 or welding, or fastened with bolts and nuts.

The synthetic resin string guide bush 21 or string guide string tube 22 shown in FIG. 10 is fitted into the string through hole 14 of the bend lever 12. This is to allow the string 23 to pass closer to the center of the string through hole 14 and to prevent the metal surface at the edge of the hole and the metal string 23 from directly touching each other and rubbing against each other for wear.

When the bend lever 12 is used as a string bender for the 3rd string (G string), when the lever is moved to the 3rd string (G string) side and attached, the lever should not come into contact with the screw of the stopper 26. The bend lever 12 is provided with the notch 15 shown in FIG. 5 so that the screw can be released.

As shown in FIGS. 17 and 18, when the bend lever 12 for the 3rd string (G string) is attached and used in combination with the existing shoulder strap type 2nd string (B string) string bender, It is necessary to provide a passage for the 2nd string (B string) in the lever, and a groove 39 through which the string 23 is passed is provided so as to penetrate in the plate thickness direction of the bending lever 12.

FIG. 14 shows a schematic diagram as a string bender for two strings with three types of bridge saddles 29. The vertical portion 33 of the bridge plate 44 for the 3-saddle is provided with a string through groove 32 and a screw hole 6 dedicated to the stopper in advance. The 3 saddle spacer 2 is fitted into the head of the octave adjusting screw 30 protruding from the vertical surface 34 of the bridge plate 44.

The stopper 26 is attached from the stopper-dedicated screw hole 6 of the spacer 2 for the 3-saddle, penetrates the screw hole 6 provided in the bridge plate 44 for the 3-saddle, and fastened with a nut 27 to temporarily fix the stopper 26.

The bend lever 12 is placed between the spacer 2 for the 3 saddle and the stopper 26, the string 23 is passed through the string stop hole 13 of the bend lever 12, and the string guide 16 is crawled, and the string through hole 14 and the through hole for the 2nd string are passed. 4. Pass through the string threading groove 32 in order, hang it on the bridge saddle 29, and wind it up with the string winding machine 38. The bend lever 12 comes into close contact with the 3-saddle spacer 2 only by the tension at which the string 23 is wound up. After adjusting the sound of the string 23, the stopper 26 is adjusted to determine the amount of pushing down of the bend lever 12, and the nut 27 is tightened to fix the stopper 26.

FIG. 15 shows a schematic diagram of a type with six bridge saddles 29 as a string bender bender for two strings. It is assumed that the stopper dedicated screw hole 6 is provided in advance on the vertical surface 34 of the bridge plate 45 for the 6 saddle. The octave adjustment screw 30 of the bridge saddle 29 for the 2nd string is replaced with an air bleeding bolt 31. 6 The saddle spacer 3 is fitted into the head of the octave adjusting screw 30 protruding from the vertical surface 34 of the bridge plate 45. The stopper 26 and the bend lever 12 are attached in the same manner as the type with three bridge saddles 29.

When the bend lever 12 is used as a string bender bender for the 3rd string (G string), in the model with 3 bridge saddles 29, the 3rd string through hole 5 of the 3rd saddle spacer 2 and the string through hole 14 of the lever are used. The position of the bend lever 12 is adjusted and the bend lever 12 is moved. For models with 6 bridge saddles 29, replace the octave adjustment screw 30 for the 3rd string with an air bleeding bolt 31 and align it with the position of the through hole of the 3rd string (G string) of the spacer 3 for the bend lever. Move twelve. In either case, since the bend lever 12 is provided with the notch 15, the screw of the stopper 26 and the bend lever 12 do not come into contact with each other.

FIG. 17 shows an example in which a bend lever 12 for the 3rd string (G string) is installed side by side in a guitar already equipped with a string bender for the 2nd string (B string), and FIG. 18 shows a schematic diagram. Shown. It is assumed that the bridge plate 44 for the 3-saddle is provided with a string through groove 32 or a through hole for the 3rd string and a screw hole 6 dedicated to the stopper in advance. The bend lever 12 stretches the built-in string as a string bender bender for the 3rd string, and the 2nd string (B string) stretches through the groove 39 provided in the bend lever 12. The groove hole 39 has a width and a height that do not come into contact with the string 23 even when the bend lever 12 is operated.

FIG. 19 shows a schematic view when the extension bar 41 is attached to the bend lever 12. The extension bar 41 attached to the extension hole 40 provided in the bend lever 12 can be rotated around the extension hole 40 to change the angle, and the position where the hand is placed can be changed.

FIG. 20 shows an embodiment in which the grip ball 42 is attached to the bend lever 12. By changing the size of the grip ball 42 attached to the lever, the height at which the hand is placed changes and the degree of freedom of movement of the hand and fingers increases.

The present invention can be used for a stringed instrument using a bridge plate equipped with an otaku adjusting screw that moves a bridge saddle in a vertical portion.

1 Spacer 2 3 Saddle spacer 3 6 Saddle spacer 4 2 String through hole 5 3 String through hole 6 Stopper dedicated screw hole 7 Through hole 8 String through guide tube 9 Support point 10 Start point 11 End point 12 Bend lever 13 String stop Hole 14 String through hole 15 Notch 16 String guide 17 String guide stop hole 18 String guide part String through hole 19 Termination 20 Rivet 21 String guide bush 22 String guide string through tube 23 String 24 Rewinding part 25 End ball 26 Stopper 27 Nut 28 Bridge plate 29 Bridge saddle 30 Octave adjustment screw 31 Air bleeding bolt 32 String through groove 33 Vertical part 34 Vertical face 35 Spring 36 Strap pin 37 Shoulder strap 38 String winding machine 39 Groove hole 40 Extension hole 41 Extension bar 42 Grip ball 43 Pickup 44 3 Bridge plate for saddle 45 6 Bridge plate for saddle

Claims (3)

The same number of through holes with a diameter and depth for filling the screw heads of multiple octave adjustment screws protruding from the vertical surface of the bridge plate are provided in the plate thickness direction as many as the number of the screw heads, and the 2nd and 3rd strings are provided. It is a thick plate-shaped object that penetrates the string through hole for the string and the screw hole for the stopper in the plate thickness direction, and is molded with metal or synthetic resin. A spacer that can be attached to the string and a T-shaped metal plate that is bent into a horizontal fold shape with an blunt angle or a partial arc, and is used for string fixing that penetrates in the plate thickness direction. A bending lever characterized in that it has a hole and a hole for passing a string, and is provided with a string guide having an arc or elliptical arc-shaped string path between the hole for stopping the string and the hole for passing the string. A single string traction device that can change the pitch by pushing down the bend lever with the palm of your hand, using the corner of the spacer as a fulcrum when performing string bender playing. The single string traction device according to claim 1, wherein a spacer equipped with a stopper, which limits the range of motion of the bend lever and can adjust the pitch, is incorporated. When used as a string bender for 3 strings, a notch is provided to avoid contact with the screw of the stopper, and when used as a string bender for 3 strings in combination with a shoulder strap type string bender, 2 The single string traction device according to claim 1, wherein a bend lever is provided so as to provide a groove necessary for passing a string in the plate thickness direction.

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