JP6341354B2 - Electronic stringed instruments - Google Patents

Description

  The present invention relates to an electronic stringed instrument such as a guitar, mandolin, ukulele, and shamisen.

  For example, in an electronic guitar, as described in Patent Document 1, a guitar body is composed of a torso and a neck, a plurality of musical tone trigger strings are stretched over the torso, and a fingerboard on the neck is provided. In addition, a configuration in which the same number of fret strings are stretched is known.

Japanese Utility Model Publication No. 63-29193

  In such an electronic guitar, a tone trigger switch is provided for each of a plurality of tone trigger strings stretched over the trunk, and a pitch designation switch is provided on a fingerboard of a neck over which a plurality of fret strings are stretched. It is configured. The musical tone trigger switch is configured to detect vibration of the musical tone trigger string as an electric signal.

  The pitch designating switch is provided on a rubber sheet having a plurality of fret portions along the direction in which the fret strings are stretched, a conductive sheet provided on the lower surface of the rubber sheet, and a lower surface of the conductive sheet. And a wiring board provided on the lower surface of the spacer sheet and having a plurality of contact electrodes.

  As a result, when the pitch designation switch is pressed with the finger on the fret string and the rubber sheet positioned between the fret parts is pushed down, the rubber sheet is elastically deformed to push down the conductive sheet. The contact electrode of the wiring board is contacted through the opening, and the contacted conductive sheet conducts the contact electrodes to each other, thereby outputting a pitch corresponding to the pressed position as an electric signal.

  Such an electronic guitar can be used to play sounds on the fingerboard by playing multiple trigger strings that are stretched across the torso while holding the fingers against the fret strings that are stretched over the fingerboard of the neck. The pitch specified switch outputs the pitch according to the pressed position as an electrical signal, and the tone trigger switch on the body outputs the string vibration of the tone trigger string as an electrical signal. It is configured to generate a corresponding tone.

  However, in such an electronic guitar, a plurality of musical tone trigger strings are stretched over the trunk, and a plurality of fret strings are stretched over a fingerboard provided on the neck, so that they are inherently continuous. Because each string is divided, when you play the trigger string with your finger while pressing the fret string with your finger, the string vibration of the tone trigger string is not transmitted to the fret string, causing a sense of incongruity in the performance is there.

  That is, in this electronic guitar, when a performer performs a musical sound, the fret string pressed by the finger and the musical tone trigger string played by the finger are misaligned and do not correspond to a straight line. Since the string vibration of the trigger string is not transmitted to the fret string, there is a problem that the performer performs without knowing the misalignment between the fret string and the musical tone trigger string, thereby generating an erroneous musical tone.

  Also, in this electronic guitar, when pressing the fret string stretched over the fingerboard of the neck with the finger, the rubber sheet of the pitch designation switch is elastically deformed and pressed down, so the fret string is pressed with a strong force. Otherwise, the fret string cannot be pressed with a finger, and this causes not only a sense of incongruity in performance, but also a problem that the operability of the string is poor.

  Therefore, in order to solve such a problem, a plurality of conductive strings are continuously divided without being divided into a plurality of musical tone trigger strings and a plurality of fret strings, and are stretched over the trunk and neck of the guitar body. At the same time, the pitch specification switch is made of metal and the current is passed through the strings. Electronic guitars configured to detect are being considered.

  However, in such an electronic guitar, the tension of the plurality of strings becomes high, so it is necessary to increase the strength of the entire guitar, and accordingly, the bridge portion to which each end of the plurality of strings is attached is made of a high-strength metal. However, if the bridge part is made of metal, the strings are connected to each other, so the pitch cannot be detected accurately and the correct musical tone cannot be generated. Arise.

  The problem to be solved by the present invention is to provide an electronic stringed musical instrument that can perform musically satisfactorily by detecting musical tone information accurately and surely without feeling uncomfortable in the operation of the strings.

This invention includes a instrument, a plurality of strings having conductivity which is stretched over the instrument body, disposed on the instrument main body, a bridge body of each end of the plurality of strings are attached, the bridge A plurality of bridge pieces arranged on the main body and individually supporting the plurality of strings , and a plurality of partition portions for preventing conduction between the plurality of strings and partitioning the plurality of bridge pieces are provided integrally. a separator unit that is a connecting portion, each of the plurality of strings are connected by conducting separately supplies the electric signals individually to the connected each string to the connection portion, said plurality of strings A pitch determining unit that determines the pitch of a musical tone to be generated by detecting whether or not each of the first and second frets has electrical conductivity and is conducted. It is a child stringed instrument.

  According to the present invention, it is possible to play by playing the same string while pressing the string stretched over the instrument body with a finger, and it is possible to press the string pressed with the finger against a conductive fret. In addition to being able to operate the strings without a sense of incongruity, even if the bridge part is made of conductive metal, the separator part insulates the strings from each other in order to increase the strength of the bridge part to which each end of multiple strings is attached. Since the plurality of strings can be prevented from conducting, the tone information can be accurately and reliably detected by the pitch determining unit to perform well.

It is the front view which showed 1st Embodiment which applied this invention to the electronic guitar. FIG. 2 is an enlarged perspective view of a main part of the electronic guitar shown in FIG. It is an expansion perspective view of the principal part which showed a part of fingerboard shown by FIG. 2 in the cross section. It is an expanded sectional view of the principal part which showed the bridge | bridging part of the electronic guitar shown by FIG. It is the expanded sectional view which decomposed | disassembled and showed the bridge | bridging part shown by FIG. FIG. 5 is an enlarged perspective view of a main part showing a bridge piece, a separator part, and a string of the bridge part shown in FIG. FIG. 7 is an enlarged perspective view showing a separator portion arranged in the bridge portion shown in FIG. 6. It is the block diagram which showed the circuit structure of the electronic guitar shown by FIG. FIG. 8 is a circuit diagram illustrating the string-pressing sensor illustrated in FIG. 7. It is the expansion perspective view of the principal part partly fractured | ruptured which showed the modification of the connection part in 1st Embodiment of the electronic guitar shown by FIG. In 2nd Embodiment which applied this invention to the electronic guitar, it is the expanded sectional view of the principal part which showed the bridge | bridging part of the electronic guitar. It is the expanded sectional view which decomposed | disassembled and showed the bridge | bridging part shown by FIG. It is the expansion perspective view which showed the separator part arrange | positioned at the bridge | bridging part shown by FIG. FIG. 12 is an enlarged plan view showing a state in which a part of the bridge piece is removed and a part of the conductive plate is exposed in the bridge portion shown in FIG. 11. It is the expansion perspective view which showed the modification of the separator part arrange | positioned at the bridge part in the electronic guitar of this invention.

(First embodiment)
A first embodiment in which the present invention is applied to an electronic guitar will be described below with reference to FIGS.
As shown in FIG. 1, this electronic guitar includes a guitar body 1. The guitar body 1 is composed of a body 2 and a neck 3. The guitar body 1 is configured such that a plurality (six in this embodiment) of strings 4 are stretched across the trunk 2 and the neck 3.

  In this case, a bridge portion 5 to which each one end portion 4a of the plurality of strings 4 is attached is provided at a substantially central portion of the trunk portion 2, as shown in FIG. In the vicinity of the bridge portion 5, a pickup portion 6 that detects each string vibration of the plurality of strings 4 as an electric signal is provided. In addition, the body portion 2 is provided with an electronic circuit portion 7 and a display portion 8. The electronic circuit unit 7 includes various electronic components necessary for an electronic guitar. The display unit 8 is configured to display various kinds of information necessary for performance by the electronic guitar.

  On the other hand, as shown in FIG. 1, a head 10 is provided at the distal end portion (right end portion in FIG. 1) of the neck 3 via a string support portion 9. The string support portion 9 is configured to support the plurality of strings 4 at equal intervals along the arrangement direction. The head 10 is provided with a plurality of pegs 11. The other end portions 4b of the plurality of strings 4 are attached to the plurality of pegs 11 so that the string tension can be adjusted. Thus, the plurality of strings 4 are stretched between the bridge portion 5 of the trunk portion 2 and the head 10. Each of the plurality of strings 4 is a conductive wire, and is configured such that a current flows with an electrical resistance.

  In addition, as shown in FIGS. 1 and 2, the finger plate 12 is provided on the neck 3 between the body 2 and the head 10. The fingerboard 12 is a strip-shaped board made of wood or synthetic resin, and a plurality of (22 in this embodiment) frets 13 are arranged at a predetermined interval along the extending direction of the plurality of strings 4, that is, the longitudinal direction of the neck 3. Is provided. Each of the plurality of frets 13 is formed of a metal having a small electrical resistance such as copper or silver, and is attached to each of a plurality of mounting holes 12a provided in the finger plate 12 as shown in FIG.

  That is, as shown in FIGS. 2 and 3, the fret 13 includes a fret main body portion 13 a having a semicircular cross section, and a foot portion 13 b provided on a lower surface that is a plane of the fret main body portion 13 a. This foot portion 13b is configured to be attached in a state where it is driven into the attachment hole 12a of the finger plate 12 and prevented from coming off. In this case, the attachment hole 12a of the finger plate 12 is a slit-like long hole penetrating up and down the finger plate 12, and the arrangement direction of the strings 4 which is a direction orthogonal to the extending direction of the plurality of strings 4; That is, it is provided along the direction orthogonal to the longitudinal direction of the neck 3.

  2 and 3, the fret 13 is in a state where the foot 13b is driven into the mounting hole 12a from above the finger plate 12 and the fret main body 13a protrudes from the upper surface of the finger plate 12. By being attached to the fingerboard 12, the plurality of strings 4 are pressed against the upper surface, which is the arc surface of the fret body portion 13a, so that they are conducted.

  In addition, a pair of wiring boards 14 are provided between the fingerboard 12 and the neck 3 as shown in FIGS. In this case, a pair of substrate storage portions 12 b are provided in parallel along the longitudinal direction of the neck 3 on the lower surface of the fingerboard 12. Each of the pair of wiring boards 14 is a strip-like elongated board, and is configured to be disposed on the neck 3 while being housed in the pair of board housing portions 12b of the fingerboard 12.

  Further, as shown in FIGS. 2 and 3, a plurality of electrode pads 15 are provided corresponding to the plurality of frets 13 on the upper surfaces of the pair of wiring boards 14. In addition, a plurality of wiring patterns 16 are provided on the upper surfaces of the pair of wiring boards 14 to guide the plurality of electrode pads 15 to one end of the wiring board 14, that is, the end located on the body 2 side. Yes. The plurality of wiring patterns 16 are connected to a connector 17 provided at an end portion of the wiring board 14, and are electrically connected to the electronic circuit unit 7 in the trunk portion 2 via the connector 17.

  Further, as shown in FIG. 3, a plurality of elastic conductive members 18 are provided between the plurality of frets 13 and the plurality of electrode pads 15 to electrically connect the two. The elastic conductive member 18 is made of conductive rubber, or a zebra type interconnector in which conductive rubber and insulating rubber are alternately laminated. The elastic conductive member 18 is elastically in contact with the fret 13 and the electrode pad 15. Both are configured to be electrically connected.

  The wiring board 14 having the plurality of electrode pads 15, the plurality of elastic conductive members 18, the plurality of frets 13, and the plurality of strings 4 constitute a string-pressing sensor 19 that is a pitch determining unit. That is, as shown in FIGS. 2 and 3, when the string 4 is pushed and pressed against the fret 13, the string-pressing sensor 19 electrically connects the string 4 and the fret 13 that are pressed. The fret 13 is configured to be electrically connected to the electrode pad 15 of the wiring board 14 via the elastic conductive member 18.

  As a result, the string-pressing sensor 19 has a pitch corresponding to the string-pressing position by the string 4 that has been pressed and the electrode pad 15 corresponding to the fret 13 through which the string 4 is conducted, as shown in FIGS. It is configured to detect as an electrical signal. In this case, as shown in FIG. 2, a warp adjustment member 20 for adjusting the warp of the neck 3 is provided inside the neck 3. In other words, the neck 3 is provided with a cut groove 21 cut inward from the lower portion along the longitudinal direction of the neck 3.

  The warp adjusting member 20 is attached to both ends of the neck 3 so as to be tightened in a state where the warp adjusting member 20 is disposed in the cut groove 21 of the neck 3. Thereby, as shown in FIG. 2, the warp adjusting member 20 is configured to adjust the warp of the neck 3 by adjusting the tightening force at both ends thereof. Further, the cut groove 21 is closed by the lid member 22 so that the warp adjusting member 20 cannot be seen from the outside by fitting the lid member 22 into the lower portion thereof.

  By the way, as shown in FIGS. 1 and 4, the bridge portion 5 to which each one end portion 4 a (left end portion in FIG. 1) of the plurality of strings 4 is attached is in a bridge hole 23 provided in the central portion of the trunk portion 2. And a plurality of bridge pieces 25 which are arranged on the bridge body 24 and support the plurality of strings 4 respectively.

  As shown in FIGS. 4 and 5, the bridge body 24 has a metal bridge block 26 and a metal bridge base 27. The bridge block 26 is disposed in the bridge hole 23 of the trunk portion 2 and is configured to protrude upward from the trunk portion 2. The bridge base 27 is attached to the upper part of the bridge block 26 protruding upward from the body 2 by screws 27b.

  4 and 5, the bridge body 24 has a spring member 28 attached to the lower portion of the bridge block 26, and is directed toward the neck 3 side (the left end portion in FIG. 4) by the spring force of the spring member 28. In this state, the distal end portion 27 a of the bridge base 27, that is, the distal end portion 27 a located on the neck 3 side is pressed against the pin member 29 provided on the trunk portion 2. A bridge block 26 floats in the bridge hole 23 and is attached so as to be swingable.

  In this case, a tremolo arm 30 is attached to the bridge body 24 as shown in FIG. The tremolo arm 30 is operated to swing the bridge body 24 in the direction in which the strings 4 are stretched and in the direction perpendicular thereto, thereby changing the tension of the plurality of strings 4 and adding sound effects. It is configured to let you. A back cover 23 a that closes the bridge hole 23 is attached to the lower portion of the body portion 2.

  On the other hand, as shown in FIGS. 4 to 6, each of the plurality of bridge pieces 25 is obtained by processing a metal plate into a sheet metal, and includes a plate-like piece body 31 and a front end portion of the piece body 31 (the left end in FIG. 4). On the bridge base 27, and a plate-like protrusion 33 provided upright at the rear end (right end in FIG. 4) of the piece main body 31. It arrange | positions through the separator part 34 at this.

  In this case, as shown in FIGS. 4 and 6, the string support portion 32 of the bridge piece 25 is formed in a semicircular arc shape, and the string 4 is pressed against the semicircular arc upper end portion. When stretched, the string 4 is configured to bend along the arc at the upper end. Further, since the string support portion 32 is formed of a metal plate, the stretched string 4 does not bite into the upper end portion. For this reason, when the string 4 is played, the string support portion 32 is configured to vibrate the string 4 with the contact portion of the string 4 as a fulcrum to prevent deterioration of sound quality.

  Moreover, as shown in FIGS. 4-7, the separator part 34 is formed with the synthetic resin which has insulation, such as ABS resin, styrene resin (polystyrene: PS), and urea resin, and the some string 4 mutually adjacent | abutted Is insulated so as to prevent conduction between the plurality of strings 4. That is, the separator portion 34 is disposed between each of the insulating plate 35 that prevents conduction between the plurality of strings 4 by the metal bridge portion 5 and the plurality of strings 4 located in the bridge portion 5 and is adjacent to each other. And a plurality of partition plates 36 for preventing conduction between the strings 4.

  In this case, the insulating plate 35 is disposed between the bridge base 27 of the bridge body 24 and the plurality of bridge pieces 25 as shown in FIGS. In this case, the insulating plate 35 is disposed over almost the entire area of the upper surface of the bridge base 27. The insulating plate 35 is configured such that a plurality of bridge pieces 25 are arranged on the upper surface in a state corresponding to the plurality of strings 4 respectively.

  Thereby, as shown in FIGS. 4 to 7, the insulating plate 35 insulates the bridge body 24 from the plurality of bridge pieces 25, thereby preventing the plurality of bridge pieces 25 from being electrically connected by the bridge body 24. It is configured as follows. In this case, in the insulating plate 25, the string insertion holes 35a into which the plurality of strings 4 are respectively inserted are located between the plurality of partition plates 36, and the string insertion holes 31a of the plurality of bridge pieces 25, and Corresponding to each string insertion hole 27c of the bridge base 27 is provided.

  Moreover, the some partition plate 36 is arrange | positioned on the insulating plate 35 in the state located between each of the some string 4 as shown in FIGS. In other words, the plurality of partition plates 36 are arranged in a standing state between each of the plurality of bridge pieces 25, thereby preventing contact between the plurality of adjacent bridge pieces 25. In this case, the plurality of partition plates 36 are formed such that the length of the plurality of strings 4 in the extending direction is longer than the length of the bridge piece 25 in the same direction.

  Further, as shown in FIGS. 4 to 7, the plurality of partition plates 36 are integrally formed on an insulating plate 35 located at a position corresponding to each of the plurality of bridge pieces 25. As a result, when the plurality of partition plates 36 vibrate when the plurality of strings 4 are played during performance, even if the plurality of bridge pieces 25 are tilted by the vibration, the plurality of adjacent bridge pieces 25 contact each other. It is configured to prevent electrical conduction.

  In this case, a metal string height adjusting screw 37 is attached to the string support portion 32 of the bridge piece 25 as shown in FIGS. The string height adjusting screw 37 is screwed to the string support part 32 in a state of protruding from the upper part to the lower part. As a result, the string height adjusting screw 37 is rotated, and the lower end portion of the string height adjusting screw 37 protrudes and descends below the bridge piece 25 and is pressed onto the insulating plate 35 of the separator portion 34, thereby insulating the string height adjusting screw 37. The sound of the string 4 is adjusted by displacing the bridge piece 25 up and down on the plate 35 in a floating state.

  Further, as shown in FIGS. 4 to 6, an octave adjusting screw 38 is attached to the protrusion 33 of the bridge piece 25. The octave adjusting screw 38 is a material having an insulating property such as a synthetic resin, and is screwed into the screw hole 33a provided in the protrusion 33 of the bridge piece 25 through the insertion hole 39a provided in the attachment part 39 of the bridge base 27. Match. In this case, a coil spring 40 is provided on the outer periphery of the octave adjusting screw 38 between the protrusion 33 of the bridge piece 25 and the mounting portion 39 of the bridge base 27.

  As shown in FIG. 4, the coil spring 40 is a material having an insulating property such as a synthetic resin, and as shown in FIG. 4, the projection 33 of the bridge piece 25 is urged toward the front side (left side in FIG. 4) in the pushing direction. The head portion 38a of the octave adjusting screw 38 is configured to be pressed against the outer surface (right side in FIG. 4) of the mounting portion 39 of the bridge base 27. For this reason, the protruding portion 33 of the bridge piece 25 and the mounting portion 39 of the bridge base 27 are urged away from each other by the spring force of the coil spring 40.

  Thereby, as shown in FIG. 4, when the head 38a is turned, the octave adjusting screw 38 rotates in a state where the head 38a is in contact with the mounting portion 39 of the bridge base 27, and the screw portion at the tip. Is configured to move the bridge piece 25 in the front-rear direction (left-right direction in FIG. 4) of the bridge base 27 by spirally moving in the screw hole 33a of the protrusion 33 of the bridge piece 25.

  That is, as shown in FIG. 4, the octave adjusting screw 38 rotates the head 38 a in one direction and pushes the protrusion 33 of the bridge piece 25 toward the front side (left side in FIG. 4). The bridge piece 25 is moved to the front side by the spring force and is adjusted so as to lower the octave of the string 4.

  Further, as shown in FIG. 4, the octave adjusting screw 38 rotates the head 38a in the reverse direction so that the protrusion 33 of the bridge piece 25 resists the spring force of the coil spring 40 (the right side in FIG. 4). ), The bridge piece 25 moves rearward and adjusts the octave of the string 4 to be raised.

  By the way, as shown in FIGS. 4 to 6, each of the plurality of strings 4 has one end portion 4 a at a string insertion hole 31 a of the bridge body 25 of the bridge piece 25 and a string insertion hole 35 a of the insulating plate 35 of the separator part 34. , And through the string insertion hole 27c of the bridge base 27, it is configured to be attached in a state of being inserted into the string attachment hole 41 of the bridge block 26.

  In this case, as shown in FIGS. 4 to 6, end balls 42 having conductivity are attached to the respective one end portions 4 a of the plurality of strings 4. Further, each end 4a of the plurality of strings 4 is inserted into the string attachment hole 41 of the bridge block 26 via the insulating tube 43, so that it does not contact with the bridge block 26 and the bridge base 27 to be conducted. It is configured as follows.

  In this case, as shown in FIGS. 4 and 5, the string attachment hole 41 of the bridge block 26 has an upper portion formed in a small diameter hole 41a, a lower portion formed in a large diameter hole 41b, and an intermediate portion formed in a medium diameter hole 41c. In the state where the small diameter tapered portion 43d is constricted at the boundary between the small diameter hole 41a and the medium diameter hole 41c, and the large diameter tapered portion 43e is constricted at the boundary between the medium diameter hole 41c and the large diameter hole 41b. Is formed.

  The insulating tube 43 is made of an insulating synthetic resin such as vinyl chloride resin (PVC). As shown in FIGS. 4 to 6, the insulating tube 43 includes a small-diameter hole 43 a into which the string 4 is inserted and a large-diameter hole 43 b into which the end ball 42 is inserted, like the string mounting hole 41 of the bridge block 26. And a medium diameter hole 43c located in the middle, and a small diameter taper 43d is constricted at the boundary between the small diameter hole 43a and the medium diameter hole 43c. A large-diameter tapered portion 43e is constricted at the boundary with the hole 43b.

  As a result, as shown in FIGS. 4 and 5, the insulating tube 43 has the large-diameter hole portion 43b inserted into the large-diameter hole 41b of the string attachment hole 41 of the bridge block 26, and the large-diameter tapered portion 43e is bridged. The medium diameter hole 43c is in contact with the large diameter taper portion 43e of the string attachment hole 41 of the block 26, the medium diameter hole 43c is inserted into the medium diameter hole 41c of the string attachment hole 41 of the bridge block 26, and the small diameter taper portion 43d is the bridge block 26. The small diameter hole portion 43 a is configured to be inserted into the small diameter hole 41 a of the string attachment hole 41 of the bridge block 26 and the string insertion hole 27 c of the bridge base 27 in a state where the small diameter taper portion 43 d of the string attachment hole 41 abuts. Has been.

  In addition, as shown in FIGS. 4 to 6, a conductive tube 44 is provided inside the insulating tube 43. The conductive tube 44 includes a string insertion portion 42a into which one end 4a of the string 4 is inserted, and a wide-mouth taper portion 42b provided at the lower end of the string insertion portion 42a. The string insertion portion 42a is an insulating tube. 43 is inserted into the medium-diameter hole 43c, and is arranged in the insulating tube 43 in a state where the wide-mouth taper portion 42b is in contact with the large-diameter taper portion 43e of the insulating tube 43.

  Accordingly, when the end ball 42 is inserted into the large-diameter hole 43b of the insulating tube 43 in a state where the conductive tube 44 is disposed in the insulating tube 43 as shown in FIGS. The end ball 42 is configured to conduct with the end ball 42 by contacting the tapered portion 42 b of the conductive tube 44.

  Further, as shown in FIG. 5 to FIG. 6, the connection cable 45 is joined to the lower end of the conductive tube 44 by soldering or caulking, and is electrically connected to the electronic circuit unit 7 by the connection cable 45. As a result, a current is supplied to the conductive tube 44. Accordingly, the plurality of strings 4 are configured such that the current supplied to the conductive tube 44 flows through the end balls 42.

  In this case, as shown in FIGS. 4 and 5, the plurality of strings 4 do not contact the bridge body 24 of the bridge portion 5 by the insulating tube 43, and the string attachment holes 41 of the bridge block 26 and the bridge base 27 are not touched. In a state where the string insertion hole 27c, the string insertion hole 35a of the insulating plate 35 of the separator part 34, and the string insertion hole 31a of the bridge body 25 of the bridge piece 25 are pressed onto the string support part 32 of the bridge piece 25, It is comprised so that it may stretch without being mutually connected.

Next, the circuit configuration of this electronic guitar will be described with reference to the block diagram shown in FIG.
The electronic guitar has a circuit configuration including a central processing unit (CPU) 50 that controls the entire circuit, a memory unit 51 that stores a predetermined program and input data, and various types such as volume, tone, and mode switching. An operation switch unit 52 including a switch, a string sensor 19 that detects a string-pressing position of the plurality of strings 4, and a pickup unit 6 that detects a string vibration caused by a string operation of the plurality of strings 4 as an electric signal are provided. .

  In this embodiment, the CPU 50 determines the pitch at the time of starting the tone generation of the musical tone to be generated based on the position of the string detected by the string sensor 19. Further, the CPU 50 controls the tone generation timing of the musical tone and the pitch of the musical tone being generated based on the string vibration from the pickup unit 6.

  The circuit configuration of the electronic guitar includes a display unit 8 that displays various types of information based on commands from the CPU 50, a sound source unit 53 that generates musical tone data based on pitch and tone generation timing commands from the CPU 50, An effect unit 54 for adding an effect to the musical tone data generated by the sound source unit 53, and a D / A conversion for converting the musical tone data to which the effect is added by the effect unit 54 into an analog signal and outputting it to an audio device And an interface (I / F) 56 that exchanges data with an external device based on a command from the CPU 50.

  In this case, as shown in FIG. 9, in the string sensor 19, a plurality of (six) strings 4 and a plurality (22) frets 13 form a matrix switch of XY coordinates, and this XY coordinate switch scan is performed. By doing so, it is configured to output a switch signal corresponding to the pressed position of the plurality of strings 4. That is, the string sensor 19 outputs an X-coordinate signal corresponding to the X-coordinate based on the output signals sequentially output in time division from the plurality of electrode pads 15 corresponding to the plurality of frets 13. And a Y signal control unit 58 that outputs a Y coordinate signal corresponding to the Y coordinate based on output signals sequentially output in time division from each of the plurality of strings 4.

  As a result, when one of the plurality of strings 4 is pressed and pressed against one of the plurality of frets 13, the pressed string sensor 19 conducts the pressed string 4 and the fret 13, and wiring corresponding thereto A current flows through the electrode pad 15 and the string 4 of the substrate 14, the X coordinate position of the fret 13 where the string 4 is conducted is designated by the X signal control unit 57, and the Y coordinate position of the string 4 which is conducted to the fret 13. Is specified by the Y signal control unit 58, and the XY coordinate position of the pressed string 4 and the corresponding fret 13 is thereby specified.

  In other words, when the XY coordinate position of the pressed string 4 and the corresponding fret 13 is designated, the string sensor 19 sends a position signal corresponding to the designated X coordinate of the fret 13 by the X signal control unit 57. The Y signal control unit 58 outputs a position signal corresponding to the designated Y coordinate of the string 4, thereby detecting and outputting the pitch corresponding to the pressed string position as the XY coordinate position. ing.

Next, the operation of such an electronic guitar will be described.
When playing with this electronic guitar, as with the acoustic guitar, while selecting a plurality of strings 4 stretched on the fingerboard 12 of the neck 3 and pressing it with one of the fingers, Play the string 4 pressed against the fret 13. At this time, the pitch sensor 19 detects the pitch corresponding to the string position, detects the string vibration of the string 4 pressed by the pickup unit 6, and generates a musical tone based on these.

  That is, when one of the plurality of strings 4 is pressed and pressed against one of the plurality of frets 13, the string sensor 19 conducts the string 4 and the fret 13, and the corresponding electrode pad of the wiring board 14. Current flows through 15 and the string 4. Thereby, the X coordinate position of the fret 13 to which the string 4 is conducted is designated by the X signal control unit 57, and the Y coordinate position of the string 4 conducted to the fret 13 is designated by the Y signal control unit 58. High information is determined.

  Further, when the string 4 conducted to the fret 13 is played, the pickup unit 6 detects the vibration of the played string 4. Based on the pitch information determined by the string sensor 19 and the string vibration information detected by the pickup unit 6, the CPU 50 gives a command to the sound source unit 53 to generate sound source data, and effects are generated based on the sound source data. The musical sound data is generated by the unit 54 and output to the audio device to generate the musical sound.

  Thus, according to this electronic guitar, the plurality of conductive strings 4 stretched on the guitar body 1 having the body 2 and the neck 3 and the plurality of strings 4 provided on the body 2 of the guitar body 1 are provided. The bridge portion 5 to which each one end 4a of the string 4 is attached, the separator portion 34 provided on the bridge portion to prevent conduction between the plurality of adjacent strings 4 and the plurality of strings 4 are individually conducted. The string-pushing sensor which detects a pitch by the conductive tube 44 and the connection cable 45 which are the connection parts connected to each other, and the plurality of strings 4 being pressed against the plurality of conductive metal frets 13 and conducting. 19 can be performed satisfactorily by detecting musical tone information accurately and surely without feeling uncomfortable with the operation of the string 4.

  That is, in this electronic guitar, it is possible to play by playing the same string 4 while changing the effective string length by pressing the string 4 stretched over the guitar body 1 with a finger, and the string 4 held by the finger. Can be pressed against the metal fret 13, so that the strings can be operated without a sense of incongruity, and in order to increase the strength of the bridge portions 5 to which the one end portions 4 a of the plurality of strings 4 are attached, the bridge portions 5 are made of metal. Even if it is formed, it is possible to prevent the plurality of strings 4 from being connected to each other by the separator portion 34, so that the musical tone information can be accurately and reliably detected by the string sensor 19, thereby performing well. be able to.

  In this case, the separator portion 34 is disposed between each of the insulating plate 35 that prevents conduction between the plurality of strings 4 by the bridge portion 5 and the plurality of strings 4 located on the bridge portion 5, and the plurality of strings 4 And a plurality of partition portions 36 that prevent electrical conduction between the plurality of strings 4 can be prevented from being conducted by the insulating plate 35 via the bridge portion 5, and the plurality of partition plates 36 A plurality of adjacent strings 4 can be prevented from conducting.

  As described above, since it is possible to prevent the plurality of strings 4 from being conducted to each other, it is possible to accurately and reliably detect musical tone information by the string-pressing sensor 19, and thereby perform well. For this reason, in this electronic guitar, since there are few additional parts, cost reduction can be achieved, and fret detection by the string sensor 19, that is, pitch detection can be speeded up. The strings 4 can be easily exchanged while being connected to the connection cable 45 in a state where the strings 4 are insulated.

  The bridge portion 5 includes a bridge body 24 provided with a plurality of string attachment holes 41 into which the one end portions 4a of the plurality of strings 4 are inserted and attached, and an insulating plate of the separator portion 34 on the bridge body 24. The bridge main body 24 and the bridge of the bridge portion 5 to which the respective one end portions 4a of the plurality of strings 4 are attached are provided with the bridge pieces 25 that are arranged via 35 and individually support the plurality of strings 4. In order to increase the strength of the piece 25, the bridge body 24 and the bridge piece 25 can be formed of metal.

  In this case, even if the bridge main body 24 and the bridge piece 25 are formed of metal, the insulating plate 34 of the separator portion 34 can prevent the plurality of bridge pieces 25 from being conducted through the bridge main body 24. A plurality of strings 4 pressed and stretched against the bridge piece 25 can be prevented from conducting through the plurality of bridge pieces 25, and a plurality of bridges adjacent to each other by the plurality of partition plates 36 of the separator portion 34. Contact between the pieces 25 can be prevented, thereby preventing conduction between the plurality of bridge pieces 25, and reliably and satisfactorily preventing conduction between the plurality of strings 4 through the plurality of bridge pieces 25. Can do.

  That is, the insulating plate 35 is disposed between the bridge body 24 and the plurality of bridge pieces 25, so that even if the bridge body 24 and the plurality of bridge pieces 25 are formed of metal, the insulating plate 35 is bridged by the insulating plate 35. Since the main body 24 and the plurality of bridge pieces 25 can be insulated, it is possible to reliably prevent the plurality of bridge pieces 25 from being electrically connected to each other via the bridge main body 24. Thus, it is possible to reliably prevent the plurality of strings 4 from being connected to each other.

  In addition, the plurality of partition plates 36 are arranged in a standing state between the plurality of bridge pieces 25, thereby preventing the bridge pieces 25 adjacent to each other from being in contact with each other by the plurality of partition plates 36. As a result, it is possible to reliably prevent the plurality of bridge pieces 25 from being connected to each other. In this case, since the plurality of bridge pieces 25 are arranged in a state in which the string support portion 32 is lifted and floated on the insulating plate 35 by the string height adjusting screw 37, when the plurality of strings 4 are played and vibrated. In addition, even when the bridge pieces 25 are inclined in the arrangement direction of the strings 4, it is possible to reliably prevent the bridge pieces 25 adjacent to each other from being brought into contact with each other by the partition plates 36.

  Further, since the plurality of partition plates 36 are arranged on the insulating plate 35, the bridge pieces 25 are simply arranged on the insulating plates 35 positioned between the plurality of partition plates 36, and The plurality of partition plates 36 can be easily arranged in a standing state between the bridge pieces 25. Furthermore, since the plurality of partition plates 36 are formed integrally with the insulating plate 35, the number of additional parts is small, the number of parts can be reduced, the assembly workability can be improved, and the cost can be reduced. Can also be planned.

  In this case, since the plurality of insulating tubes 43 are respectively inserted and arranged in the plurality of string attachment holes 41 of the bridge body 24 with the respective one end portions 4a of the plurality of strings 4 inserted therein, the bridge body Even if 24 is made of metal, the plurality of strings 4 can be insulated from the bridge body 24 by the plurality of insulating tubes 43, thereby reliably preventing the plurality of strings 4 from conducting to each other. it can.

  Further, the plurality of strings 4 are electrically connected to a plurality of conductive tubes 44 provided inside the plurality of insulating tubes 43, and a plurality of connection cables 45 are individually connected to the plurality of conductive tubes 44, respectively. The plurality of connection cables 45 can individually supply current to each of the plurality of strings 4 through the plurality of conductive tubes 44, thereby individually connecting the plurality of strings 4 to the plurality of metal frets 13. It can be pressed to make it conductive.

  Thereby, in this electronic guitar, each string 4 can be easily exchanged while connecting each string 4 to the connection cable 45 in a state where each string 4 is insulated from the bridge portion 5. An electric signal to be generated is detected by individually supplying an electric signal to each of the strings 4 and detecting whether the plurality of strings 4 are pressed against one of the plurality of conductive frets 13 to be conductive. Since the string sensor 19 which is a pitch determination unit for determining the pitch of the string is provided, the pitch information can be detected at high speed and accurately by the string sensor 19, thereby making it possible to perform well. it can.

  In the above-described first embodiment, the case where the conductive tube 44 is inserted into the insulating tube 43 and the end ball 42 of the string 4 is brought into contact with the conductive tube 44 to conduct is described. For example, as in the modification shown in FIG. 10, a conductive layer 60 is provided on the inner surface of the insulating tube 43, the end ball 42 is brought into contact with the conductive layer 60 to conduct, and the connection clip is sandwiched between the conductive layers 60. The configuration may be such that 61 is attached to the lower end of the insulating tube 43 and the connection cable 45 is connected to the connection clip 61.

  Even with this configuration, the end ball 42 of the string 4 can be brought into contact with the conductive layer 60 provided on the inner surface of the insulating tube 43 so as to be conducted. A current can be individually supplied to the strings 4 in the tube 43, whereby the plurality of strings 4 can be individually pressed against the plurality of metal frets 13 to be conducted. Information can be detected accurately.

(Second Embodiment)
Next, a second embodiment in which the present invention is applied to an electronic guitar will be described with reference to FIGS. The same parts as those in the first embodiment shown in FIG. 1 to FIG.
As shown in FIGS. 11 to 13, the electronic guitar is provided on a separator portion 34 that insulates the bridge body 24 and the plurality of bridge pieces 25 of the bridge portion 5 and also insulates a plurality of adjacent bridge pieces 25 from each other. In addition, a plurality of conductive plates 65 as wiring portions are provided by bonding, and the other configuration is substantially the same as in the first embodiment.

  That is, the separator part 34 is formed of an insulating synthetic resin such as an ABS resin, a styrene resin (polystyrene: PS), or a urea resin, as in the first embodiment. The separator portion 34 includes an insulating plate 35 that prevents conduction between the plurality of strings 4 by the bridge portion 5, and a plurality of partition plates 36 that prevents conduction between the plurality of adjacent strings 4.

  Also in this case, the insulating plate 35 is disposed between the bridge base 27 of the bridge body 24 and the plurality of bridge pieces 25 as shown in FIGS. In this case, the insulating plate 35 is disposed over almost the entire area of the upper surface of the bridge base 27. The insulating plate 35 is configured such that a plurality of bridge pieces 25 are arranged on the upper surface of the insulating plate 35 via conductive plates 65 so as to correspond to the plurality of strings 4, respectively, and insulate the bridge pieces 25 from the bridge body 24. Has been.

  Moreover, the some partition plate 36 is arrange | positioned on the insulating plate 35 in the state located between each of the some string 4 as shown in FIGS. In other words, the plurality of partition plates 36 are arranged in a standing state between each of the plurality of bridge pieces 25, thereby preventing contact between the plurality of adjacent bridge pieces 25.

  In addition, the plurality of partition plates 36 are integrally formed on the insulating plate 35 located at corresponding positions between the plurality of bridge pieces 25. Thus, as in the first embodiment, the plurality of partition plates 36 are adjacent to each other even when the plurality of bridge pieces 25 are tilted by the vibration of each string 4 when the plurality of strings 4 are struck and vibrated during performance. The plurality of bridge pieces 25 that are in contact with each other are prevented from being brought into contact with each other.

  On the other hand, the string height adjusting screw 37 provided on the string support portion 32 of the bridge piece 25 is made of a conductive metal, and, like the first embodiment, penetrates the string support portion 32 from the upper part to the lower part thereof. It is screwed. As a result, the string height adjusting screw 37 is turned so that the lower end portion of the string height adjusting screw 37 protrudes and descends below the bridge piece 25 and is pressed against the conductive plate 65 on the insulating plate 35. 27, the bridge piece 25 is displaced up and down to adjust the sound of the string 4.

  Further, the octave adjusting screw 38 and the coil spring 40 are each formed of a synthetic resin having insulating properties, as in the first embodiment. The octave adjusting screw 38 rotates in a state where the head portion 36a is in contact with the mounting portion 39 of the bridge base 27, and the screw portion at the tip rotates in a screw hole 33a of the protruding portion 33 of the bridge piece 25 while moving spirally. By doing so, the bridge piece 25 is configured to move in the front-rear direction of the bridge base 27 (left-right direction in FIG. 11).

  By the way, as shown in FIGS. 11 to 14, the plurality of conductive plates 65 that are wiring portions provided in the separator portion 34 are arranged between the insulating plate 35 and the plurality of bridge pieces 25, respectively. The plurality of strings 4 are individually connected through the bridge piece 25. In other words, each of the plurality of conductive plates 65 is made of a conductive metal plate such as a copper plate, and corresponds to the plurality of bridge pieces 25 on the upper surface of the insulating plate 35 positioned between the partition plates 36 of the separator portion 34. It is adhered in the state.

  As shown in FIGS. 11 to 14, the conductive plate 65 includes a main body portion 65 a that is in contact with the lower end of the string height adjusting screw 37 attached to the bridge piece 25 and is connected to the bridge piece 25, and a string of the insulating plate 35. A string contact portion 65b that protrudes into the insertion hole 35a and contacts the string 4 inserted into the string insertion hole 35a, and a predetermined position of the insulating plate 35 from the main body 65a, that is, a position located behind the bridge piece 25. The first and second wiring portions 65c and 65d are extended.

  In this case, each of the first and second wiring portions 65c and 65d of the plurality of conductive plates 65 is configured to be connected to a connector 67 provided on the lower surface of the insulating plate 35, as shown in FIG. ing. In other words, the first wiring portion 65 c is provided on the upper surface of the insulating plate 35 and extends from the end of the main body portion 65 a toward the connector 67. The second wiring portion 65c is provided on the lower surface of the insulating plate 35 in a state of being covered with an insulating film (not shown), and is insulated from the end portion of the main body portion 65a through a through hole (not shown). It is guided to the lower surface of the plate 35 and extends toward the connector 67.

  As shown in FIGS. 12 to 14, the connector 67 is connected to the first and second wiring portions 65 c and 65 d of the plurality of conductive plates 65, and the insertion hole 27 d provided in the bridge base 27 in this state. It protrudes to the lower side of the bridge base 27, and the connection cable 66 is connected to the protruding portion. As a result, the plurality of conductive plates 65 are electrically connected to the electronic circuit unit 7 by the connection cable 66 so that current is individually supplied, and the supplied current is directly or directly supplied to the string height adjusting screw 37 and the bridge. A plurality of strings 4 are individually flowed through the piece 25.

  On the other hand, the insulating tube 43 is configured to be inserted and disposed in the plurality of string attachment holes 41 of the bridge body 24 in a state where the respective one end portions 4a of the plurality of strings 4 are inserted, as in the first embodiment. ing. In this case, the string attachment hole 41 of the bridge body 24 has an upper portion formed in the small diameter hole 41a and a lower portion formed in the large diameter hole 41b, and the tapered portion 43d is constricted at the boundary between the small diameter hole 41a and the large diameter hole 41b. It is formed in the state.

  The insulating tube 43 is for preventing conduction between the plurality of strings 4 and the bridge body 24, as in the first embodiment. Like the string mounting hole 41 of the bridge block 26, the insulating tube 43 is a small-diameter hole into which the string 4 is inserted. It has a portion 43a and a large-diameter hole portion 43b into which the end ball 42 is inserted, and is formed with a tapered portion 43d constricted at the boundary between the small-diameter hole portion 43a and the large-diameter hole portion 43b.

  Also in this case, as shown in FIGS. 11 and 12, the plurality of strings 4 do not come into contact with the bridge body 24 of the bridge portion 5 by the insulating tube 43, and the string mounting holes 41 of the bridge block 26, the bridge base, and the like. 27, the string insertion hole 27c of the insulating plate 34, the string insertion hole 31a of the bridge body 25, and the string support hole 32 of the bridge piece 25. It is configured to be stretched without being conducted.

Next, the operation of such an electronic guitar will be described.
When playing with this electronic guitar, as with the acoustic guitar, while selecting a plurality of strings 4 stretched around the fingerboard 12 of the neck 3 and pressing them with one's fingers, By playing the string 4 pressed against the fret 13, it is possible to perform as in the first embodiment. At this time, the pitch sensor 19 determines the pitch corresponding to the pressed position, detects the string vibration of the string 4 pressed by the pickup unit 6, and generates a musical tone based on these.

  That is, when one of the plurality of strings 4 is pressed and pressed against one of the plurality of frets 13, the pressed string sensor 19 is electrically connected to the fret 13 and the wiring board corresponding thereto. 14, the X coordinate position of the fret 13 where the string 4 is conducted is specified by the X signal control unit 57 and the Y coordinate position of the string 4 which is conducted to the fret 13. Is specified by the Y signal control unit 58, and thereby the pitch information of the tone to be generated is determined.

  Further, when the string 4 conducted to the fret 13 is played, the pickup unit 6 detects the vibration of the played string 4. Based on the pitch information detected by the string sensor 19 and the string vibration information detected by the pickup unit 6, the CPU 50 gives a command to the sound source unit 53 to generate sound source data. The musical sound data is generated by the unit 54 and output to the audio device to generate the musical sound.

  As described above, according to this electronic guitar, there are the same effects as in the first embodiment, and the bridge main body 24 and the plurality of bridge pieces 25 of the bridge portion 5 are insulated and the plurality of bridge pieces adjacent to each other. A plurality of conductive plates 65, which are wiring portions, are provided on the separator portion 34 that insulates 25 from each other by bonding, and the plurality of conductive plates 65 are individually conducted to the plurality of strings 4, and the plurality of conductive plates Since the plate 65 is configured to be connected to the plurality of connection cables 66, current can be individually supplied to each of the plurality of strings 4.

  That is, in this electronic guitar, the plurality of conductive plates 65 are arranged on the insulating plates 35 positioned between the plurality of partition plates 36 in the separator portion 34 in a state corresponding to the plurality of bridge pieces 25. The plurality of connection cables 66 can individually supply current to each of the plurality of strings 4 via the plurality of conductive plates 65 and the plurality of bridge pieces 25, whereby each of the plurality of strings 4 is made of a plurality of metal pieces. Since it can be individually pressed against the fret 13 to be conducted, pitch information can be accurately detected by the string sensor 19.

  In this case, the conductive plate 65 is inserted into the main body portion 65 a that is in contact with the lower end of the metal string height adjusting screw 37 attached to the bridge piece 25 and is conducted to the bridge piece 25, and the string insertion hole 35 a of the insulating plate 35. A string contact portion 65b that protrudes and contacts the string 4 inserted into the string insertion hole 35a, and a first portion that extends from the main body portion 65a to a predetermined position of the insulating plate 34, that is, a position positioned behind the bridge piece 25. Since the first and second wiring portions 65c and 65d are provided, the plurality of conductive plates 65 can be individually brought into conduction with the plurality of strings 4, and the first and second wiring portions 65c. 65d can be individually connected to the connection cable 66.

  For this reason, it is not necessary to use the conductive tube 44 of the first embodiment and the conductive layer 60 of the modification thereof, and the plurality of strings 4 are respectively connected to the plurality of connection cables 66 via the plurality of conductive plates 65 and the plurality of bridge pieces 25. Since the plurality of strings 4 are individually pressed against the plurality of metal frets 13 to be electrically connected to each other, the pitch information can be accurately detected by the string sensor 19. .

  In the above-described second embodiment, the case where the conductive plate 65 has the string contact portion 65b that contacts the string 4 has been described. However, the conductive plate 65 does not necessarily need to have the string contact portion 65b. Reference numeral 65 denotes a main body portion 65 a that is connected to the bridge piece 25 by contact with the lower end of a metal string height adjusting screw 37 attached to the bridge piece 25, and extends to a predetermined position located behind the bridge piece 25 in the insulating plate 35. It may be configured to have only the first wiring portion 65c to be extended.

  Further, in each of the first and second embodiments described above, the case where the plurality of partition plates 36 are erected and integrally formed on the insulating plate 35 of the separator portion 34 is described, but the plurality of partition plates 36 are not necessarily provided. It is not necessary to provide the insulating plate 35 integrally. For example, as in the modification shown in FIG. 15, the rear end portions of the plurality of partition plates 36 located behind the projections 33 of the plurality of bridge pieces 25 are insulated. A configuration in which the connecting portions 70 are sequentially connected along the arrangement direction of the plurality of strings 4 may be employed.

  Also in this case, the plurality of partition plates 36 may be connected by the connecting portion 70 at intervals arranged in a standing state between the plurality of bridge portions 25. In addition, it is only necessary that the connecting portion 70 be provided with through holes 70 a through which the plurality of octave adjusting screws 38 are inserted so as to correspond to the screw holes 38 of the projecting portions 33 of the plurality of bridge pieces 25. Even such a configuration has the same effects as those of the first and second embodiments.

  In addition, the plurality of partition plates 36 of the separator portion are not limited to the connection portion 70 of the above-described modification example. For example, the upper ends of the plurality of partition plates 36 are arranged along the arrangement direction of the plurality of strings 4 by the insulating connection portions. A sequentially connected configuration may be used. In this case, the connection part should just be provided in the upper end part of the some partition plate 36 so that a connection part may be located above the several bridge | bridging piece 25. FIG.

  In addition, in each of the first and second embodiments and the modifications thereof described above, the case where the present invention is applied to an electronic guitar has been described. However, the present invention is not necessarily applied to an electronic guitar, such as mandolin, ukulele, and shamisen. It can be widely applied to various electronic stringed instruments.

As mentioned above, although several embodiment of this invention was described, this invention is not restricted to these, The invention described in the claim and its equal range are included.
The invention described in the claims of the present application will be appended below.

(Appendix)
The invention according to claim 1 is a musical instrument main body, a plurality of conductive strings stretched on the musical instrument main body, and a bridge provided on the musical instrument main body to which each end of the plurality of strings is attached. Part, a separator part that is provided in the bridge part and prevents conduction between the plurality of strings, a connection part in which each of the plurality of strings is individually connected and connected, and each of the connection parts connected to the connection part An electric signal is individually supplied to the strings, and the pitch of the musical tone to be generated is determined by detecting whether the plurality of strings are pressed against one of the plurality of conductive frets. An electronic stringed instrument comprising a pitch determining unit for determining.

  According to a second aspect of the present invention, in the electronic stringed instrument according to the first aspect, the separator portion includes an insulating portion that prevents conduction of the plurality of strings by the bridge portion, and the plurality of the plurality of strings that are located in the bridge portion. An electronic stringed musical instrument comprising: a plurality of partitions having insulating properties which are respectively disposed between strings and prevent conduction between the plurality of strings.

  According to a third aspect of the present invention, in the electronic stringed instrument according to the first or second aspect, the bridge portion includes a bridge body into which the one end portions of the plurality of strings are inserted and attached, and the bridge. An electronic stringed musical instrument comprising a plurality of bridge pieces arranged on the main body via the separator and individually supporting the plurality of strings.

  According to a fourth aspect of the present invention, in the electronic stringed instrument according to the second or third aspect, the insulating portion of the separator portion is disposed between the bridge body and the plurality of bridge pieces, and the separator In the electronic stringed instrument, the plurality of partition portions of the unit are arranged in a standing state between the plurality of bridge pieces.

  According to a fifth aspect of the present invention, in the electronic stringed instrument according to any one of the second to fourth aspects, the plurality of partition portions are integrally provided in the insulating portion. It is a stringed instrument.

  According to a sixth aspect of the present invention, in the electronic stringed instrument according to any one of the first to fifth aspects, the electronic stringed instrument is provided on each of the insulating portions positioned between the plurality of partition portions, and An electronic stringed instrument comprising a plurality of wiring portions that are individually connected to and connected to strings.

DESCRIPTION OF SYMBOLS 1 Guitar body 2 Body 3 Neck 4 String 5 Bridge part 6 Pickup part 12 Finger board 13 Fret 14 Wiring board 19 String sensor 24 Bridge body 25 Bridge piece 26 Bridge block 27 Bridge base 34 Separator part 35 Insulation board 36 Partition board 43 Insulation Tube 44 Conductive tube 45, 66 Connection cable 60 Conductive layer 65 Conductive plate

Claims (6)

The instrument body,
A plurality of conductive strings stretched on the instrument body;
A bridge body provided on the instrument body, to which one end of each of the plurality of strings is attached;
A plurality of bridge pieces arranged on the bridge body and individually supporting the plurality of strings;
A separator part integrally provided with a plurality of partition parts for preventing conduction between the plurality of strings and partitioning the bridge pieces;
Each of the plurality of strings individually connected and connected;
By individually supplying an electric signal to each of the strings connected to the connection part, and detecting whether the plurality of strings are pressed against one of a plurality of conductive frets, respectively, to conduct. A pitch determining unit that determines the pitch of the musical sound to be pronounced;
An electronic stringed instrument characterized by comprising:   2. The electronic stringed instrument according to claim 1, wherein the bridge piece is made of metal, and the separator unit is disposed between the bridge body and the plurality of bridge pieces, so that the bridge body and the plurality of bridge pieces are arranged. And an insulating portion that prevents conduction between the plurality of strings and a plurality of insulating partition portions that are disposed between the plurality of strings and prevent conduction between the plurality of strings. An electronic stringed instrument characterized by The electronic stringed instrument according to claim 1 or 2, wherein the bridge body is attached by inserting the one end portions of the plurality of strings, respectively.
The electronic stringed instrument is characterized in that the separator portion made of the one member is provided with a plurality of string insertion holes for guiding the plurality of strings to the bridge body. 3. The electronic stringed instrument according to claim 2 , wherein the insulating portion of the separator portion is an insulating plate disposed between the bridge body and the plurality of bridge pieces, and the plurality of partition portions of the separator portion are An electronic stringed instrument comprising a plurality of partition plates integrally formed and disposed on the insulating portion in a state of standing between each of the plurality of bridge pieces. 3. The electronic stringed instrument according to claim 2 , wherein the plurality of partition parts are formed integrally with the insulating part. The electronic stringed instrument according to claim 2 , wherein a plurality of wiring portions are provided on the insulating portions located between the plurality of partition portions, and are individually connected and connected to the plurality of strings. Electronic stringed instrument characterized by having.

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