Electronic device for musical instrument

Abstract

To provide an electronic device for a musical instrument which can easily recognize a force applied to a strap as a physical change.SOLUTION: An electronic device 10 for a musical instrument includes: a first member 31 for connecting to a strap 210 side; a second member 32 for connecting to an electric guitar 200 side which is a musical instrument; a generation device 60 for generating a rotary motion according to a distance between the first member 31 and the second member 32 which has been changed by a tensile force applied to the first member 31 and / or the second member 32; and a rotation detection device 40 for detecting the rotation amount of the rotary motion generated by the generation device 60.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to electronic instruments for musical instruments. [Background technology]

[0002] Conventionally, electronic devices for musical instruments that control musical tones by applying tension to the strap of the musical instrument have been disclosed. For example, Patent Document 1 discloses an electronic device for musical instruments in which a tension detection sensor is attached to the strap of a portable electronic musical instrument equipped with a strap for playing standing, and musical tones are controlled by the output of the sensor. The musical tones can be controlled by hanging the strap on the shoulder and pressing the instrument downward. The tension detection sensor attached to the strap detects the tension of the strap generated by pressing the instrument downward, and the pitch bend, volume, etc. are adjusted according to the detected value. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Utility Model Application Publication No. 59-60692 Summary of the Invention [Problem to be solved by the invention]

[0004] The strap does not stretch significantly when tension is applied, so it is difficult for the player to recognize the force applied to the strap as a physical change, making it difficult to control the desired musical tone.

[0005] An object of the present invention is to provide an electronic device for a musical instrument that enables the force applied to a strap to be easily recognized as a physical change. [Means for solving the problem]

[0006] The electronic device for a musical instrument of the present invention comprises a first member to be connected to a strap, a second member to be connected to a musical instrument, a generating device that generates a rotational motion in accordance with a distance between the first member and the second member that changes due to tension applied to the first member and / or the second member, and a rotation detection device that detects the amount of rotation of the rotational motion generated by the generating device. Effect of the Invention

[0007] According to the present invention, it is possible to provide an electronic device for a musical instrument that allows the force applied to the strap to be easily recognized as a physical change. [Brief description of the drawings]

[0008] [Figure 1] 1 is a configuration diagram of a performance system including an electronic instrument for a musical instrument according to a first embodiment of the present invention. [Diagram 2] 1 is a perspective view of a musical instrument electronic device according to a first embodiment of the present invention, as viewed from the front side; [Diagram 3] 1 is an exploded perspective view of an electronic instrument for a musical instrument according to a first embodiment of the present invention; [Figure 4] 1 is a front view of a musical instrument electronic device according to a first embodiment of the present invention, with a front case and an electronic circuit board omitted; [Diagram 5] 1 is an enlarged perspective view showing the periphery of a movable member of the electronic instrument for a musical instrument according to a first embodiment of the present invention, and showing a lever member in cross section; [Figure 6] 6A is a perspective view of an electronic instrument for a musical instrument according to a first embodiment of the present invention, seen from a direction P in FIG. 5, in which a rotation detection device is omitted, and FIG. 6B is a perspective view of an angle adjustment member. [Figure 7] FIG. 11 is an oblique view showing the main parts to explain that the orientation of the case of the electronic musical instrument device according to the first embodiment of the present invention can be adjusted by switching the groove portion of the angle adjustment member with which the pin member of the electronic musical instrument device engages. [Figure 8] 1 is an enlarged perspective view showing the periphery of a fixed member of the electronic instrument for a musical instrument according to a first embodiment of the present invention, and showing one of the sliding members in cross section; [Figure 9] 9 is a cross-sectional view of the electronic instrument for a musical instrument according to the first embodiment of the present invention, taken along line IX-IX in FIG. 4. [Figure 10] 1 is a front view showing a state in which a movable member of the electronic instrument for a musical instrument according to a first embodiment of the present invention has been moved, with a front case and an electronic circuit board omitted. FIG. [Figure 11] 11 is a perspective view showing a main part on a first member side of an electronic instrument for a musical instrument according to a second embodiment of the present invention. FIG. [Figure 12] 13 is a front view showing a main portion on a first member side of an electronic instrument for a musical instrument according to a second embodiment of the present invention, with a movable member main body indicated by a two-dot chain line. FIG. [Figure 13] 13 is a front view showing a state in which the movable member of the electronic instrument for a musical instrument according to the second embodiment of the present invention has been moved, in which the movable member main body, which is a main part on the first member side, is indicated by a two-dot chain line. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] (First embodiment) Hereinafter, an embodiment of the present invention will be described with reference to the drawings. The performance system 1 shown in Fig. 1 includes an effector device 100, an electric guitar 200 which is an electric musical instrument (i.e., a musical instrument), and a guitar amplifier 300. A musical instrument electronic device 10 according to the present invention is attached between the electric guitar 200 and a guitar strap 210 for hanging the electric guitar 200 on the shoulder. The musical instrument electronic device 10 can control musical tones.

[0010] The electric guitar 200 is connected to the effector device 100 via a guitar cable 220. The effector device 100 has an effect section 120 that is connected to an electric signal input section 110, an electric signal output section 130, and a control signal input section 140. The electric signal input section 110 is connected to the guitar cable 220, and receives an electric signal (audio signal) from the electric guitar 200. The input electric signal is given various effects such as wow and distortion by the effect section 120, and is output via the electric signal output section 130. The electric signal output section 130 is connected to a guitar amplifier 300. The electric signal output from the electric signal output section 130 is output as sound from the guitar amplifier 300.

[0011] The effect section 120 imparts an effect to the electric signal input from the electric signal input section 110 based on a control signal from the control signal input section 140. The degree of the effect, such as wow or distortion, is adjusted as desired by the musical instrument electronic device 10. The control signal input section 140 is connected to a receiving device 150 (external device). The receiving device 150 can receive an output from a communication section 75 (see FIG. 3) of the musical instrument electronic device 10.

[0012] When a player of the electric guitar 200 hangs the electric guitar 200 on his shoulder with the strap 210 while playing the instrument, and applies tension to the strap 210 by, for example, pushing the electric guitar 200 downward, the rotation shaft 41 of the rotation detection device 40 described later rotates in response to the tension applied to the strap 210, and the amount of rotation of the rotation shaft 41 is detected by the rotation detection device 40 and sent as a control signal from the instrument electronic device 10 to the receiving device 150, thereby controlling the effector device 100. That is, the communication unit 75 generates a sound to which an effect has been applied by transmitting the detection value detected by the rotation detection device 40 described later to the receiving device 150, which is an external device.

[0013] As shown in FIG. 2, the musical instrument electronic device 10 is provided with a case 20 having a substantially rectangular shape. The case 20 is provided by combining a front case 21 having an operation unit 23 provided with a power button 23a, two operation buttons 23b and 23c, and a plurality of LEDs 23d indicating the operation state, and a rear case 22 on the opposite side, which are screwed together with four screw members 24 (see FIG. 3). The screw members 24 are screwed into four boss screw portions 21g provided in the front case 21 in a corresponding manner to the boss portions 22g from the rear side of the rear case 22 through screw holes of boss portions 22g provided at substantially four corners inside the rear case 22. The musical instrument electronic device 10 is provided with a first member 31 connected to the strap 210 side and a second member 32 connected to the musical instrument (electric guitar 200) side so as to protrude from the case 20. In the following description, the first member 31 side is referred to as the top, and the second member 32 side is referred to as the bottom. Further, when viewed from the front of the musical instrument electronic device 10, the left side will be referred to as left and the right side as right.

[0014] The first member 31 includes a strap pin 31a and a plate 31b having a substantially trapezoidal shape and a substantially arc-shaped tip. The strap pin 31a is inserted into a slit provided at one end of a strap 210 for a known musical instrument and connected to the plate 31b. A shaft hole 31b1 penetrating in the left-right direction is provided at the lower end of the plate 31b, and a pin 31c long in the left-right direction is inserted therethrough. The pin 31c is inserted into a shaft hole 31d1 at the tip of a first shaft member 31d protruding upward from the case 20. A cylindrical portion 31b2 at the lower end of the plate 31b, which constitutes the shaft hole 31b1, is cut out at the center, and the tip of the first shaft member 31d is inserted therein. A substantially rectangular opening 31f is provided above the plate 31b into which the tip of the first shaft member 31d is inserted. The plate 31b of the first member 31 is provided so as to be rotatable around the axis of the pin 31c.

[0015] The second member 32 includes an annular elastic member 32a and a plate 32b that is generally trapezoidal and has a generally arc-shaped tip. The plate 32b is provided with a large hole 32b1 and a small hole 32b2 that connects to the large hole 32b1 (see also FIG. 3). The second member 32 is connected to a strap pin (not shown) on the instrument side. The strap pin on the instrument side is inserted into the large hole 32b1, moves to the small hole 32b2, and then the elastic member 32a is fitted into the strap pin, thereby connecting the strap pin to the second member 32.

[0016] An axial hole 32b3 is provided at the upper end of the plate 32b, penetrating in the left-right direction, and a pin 32c long in the left-right direction is inserted therethrough. A cylindrical portion 32b4 at the upper end of the plate 32b, which constitutes the axial hole 32b3, is cut out at the center, and the tip portion of the second shaft member 32d is inserted therein. An approximately elongated rectangular opening 32f is provided above the plate 32b into which the tip portion of the second shaft member 32d is inserted. The pin 32c is inserted into an axial hole 32d4 at the tip portion of the second shaft member 32d protruding downward from the case 20. The plate 32b of the second member 32 is provided so as to be rotatable about the axis of the pin 32c.

[0017] As shown in Figs. 3 and 4, the first shaft member 31d of the first member 31 is provided in a shaft shape, and a large diameter portion 31d2 is provided near the shaft hole 31d1 at the upper end. A substantially cylindrical bush 33 is provided below the large diameter portion 31d2 of the first shaft member 31d. A flange portion 33a is provided on the lower side of the bush 33 (see also Fig. 4). Here, a fixing portion 20b is provided at the upper end of the case 20, which has an opening through which the first shaft member 31d is inserted and protrudes in a substantially truncated cone shape (see Fig. 2). The fixing portion 20b is composed of a fixing portion 21b on the front case 21 side and a fixing portion 22b on the rear case 22 side. The fixing portions 21b and 22b are provided with grooves 21b1 (see Fig. 2) and 22b1, respectively.

[0018] The flange portion 33a of the bush 33 is fitted into the grooves 21b1, 22b1 in the fixed portion 20b of the case 20. Thus, the bush 33 is fixed by being sandwiched between the front case 21 and the rear case 22. The first shaft member 31d is supported by the bush 33 so as to be slidable in the vertical direction and around the axis of the first shaft member 31d. In addition, a damper member 34 made of an elastic member is provided between the bush 33 and the large diameter portion 31d2 of the first shaft member 31d.

[0019] The second shaft member 32d of the second member 32 is provided in a shaft shape, and a large diameter portion 32d2 is provided near the shaft hole 32d4 at the lower end. As shown in FIG. 3, a fixed large diameter portion 32d3 is provided on the second shaft member 32d above the large diameter portion 32d2. A fixed portion 20c is provided at the lower end of the case 20, which is provided with an opening through which the second shaft member 32d is inserted and protrudes in a substantially truncated cone shape (see FIG. 2). The fixed portion 20c is composed of a fixed portion 21c on the front case 21 side and a fixed portion 22c on the rear case 22 side. The top surface of the fixed portion 20c (fixed portions 21c, 22c) is arranged so as to be sandwiched between the large diameter portion 32d2 and the fixed large diameter portion 32d3. Therefore, the large diameter portion 32d2 and the fixed large diameter portion 32d3, i.e., the second shaft member 32d, are fixed to the case 20 in the up-down and left-right directions, and are supported so as to be rotatable around the axis.

[0020] The case 20 contains a generating device 60 that generates a rotational motion according to the distance between the first member 31 and the second member 32 that changes due to tension applied to the first member 31 and the second member 32. The case 20 also contains a sliding device 50 that changes the distance between the first member 31 and the second member 32 by tension. The sliding device 50 has a movable member 51 that is connected to the first member 31 and provided so as to be movable relative to the case 20, and a fixed member 52 that is connected to the second member 32 and provided so as to be fixed to the case 20. Note that instead of the fixed member 52, a movable member can also be provided on the second member 32.

[0021] Specifically, as shown in FIG. 4, the movable member 51 of the sliding device 50 is provided with a movable member body 51a. The movable member body 51a is a sheet metal member having a substantially U-shape with the open side facing downward when viewed from the left-right direction. As shown in FIG. 5, the movable member body 51a has a front side plate 51a1 on the front side, a rear side plate 51a2 on the rear side, and a bottom plate 51a3 that connects the front side plate 51a1 and the rear side plate 51a2 at the upper side. An opening hole 51a31 is provided in the substantially central portion of the bottom plate 51a3, and the first shaft member 31d is inserted through the opening hole 51a31. A damper member 35 made of an elastic member is provided on the upper surface of the bottom plate 51a3 corresponding to the opening hole 51a31.

[0022] As shown in FIG. 6(a) seen from the P direction of FIG. 5, an angle adjustment member 51b is provided at the approximate center in the left-right direction inside the front side plate 51a1, the back side plate 51a2, and the bottom plate 51a3 of the movable member main body 51a. As shown in FIG. 6(b), the angle adjustment member 51b has a through opening 51b1 and a circular recess 51b3 with a larger diameter than the opening 51b1. The angle adjustment member 51b has a plurality of grooves 51b2 radially provided around the opening 51b1 on the circular recess 51b3 side of the opening 51b1. The angle adjustment member 51b has bulges 51b4 on opposing side surfaces, and the front side plate 51a1 and the back side plate 51a2 are joined to the two bulges 51b4 by being crimped, and is fixed to the movable member main body 51a with the circular recess 51b3 side facing down. The opening hole 51a31 of the bottom plate 51a3 and the opening 51b1 of the angle adjustment member 51b are coaxial, and the first shaft member 31d is inserted therethrough.

[0023] As shown in FIG. 6(a), a pin member 31e is provided at the tip of the first shaft member 31d, which is perpendicular to the axial direction of the first shaft member 31d (in other words, perpendicular to the tension T1 applied to the first member 31). Each groove 51b2 of the angle adjustment member 51b is provided in a concave arc shape with a similar curvature so that the cylindrical pin member 31e can be engaged. The portion of the pin member 31e protruding from the first shaft member 31d engages with each groove 51b2, so that the first member 31 and the movable member 51 (movable member main body 51a) are relatively fixed at least when an upward tension is applied to the first member 31. As shown in FIG. 7, by switching the groove 51b2 with which the pin member 31e engages, the orientation of the case 20, that is, the front of the case 20 (the orientation of the operating unit 23) with respect to the axis 31a1 of the strap pin 31a of the first member 31 can be adjusted. The angle adjustment mechanism consisting of the angle adjustment member 51b and the pin member 31e can also be provided on the second member 32 side.

[0024] As shown in FIG. 5, a pin member 51a11 is erected on the front side plate 51a1 of the movable member main body 51a. Meanwhile, a rotation detection device 40 is provided on the rear case 22 of the case 20. The rotation detection device 40 is a rotary volume having a rotating shaft 41 that is chamfered and provided in a D-shape. The rotation detection device 40 can be other rotation detection devices 40 such as a rotary encoder or a rotation detector that detects the rotation position of a rotating body, in addition to the rotary volume. That is, it is sufficient if it is an instrument that detects the amount of rotation of the rotational motion generated by the generating device 60. The rotating shaft 41 of the rotation detection device 40 and the pin member 51a11 of the movable member main body 51a are connected by the generating device 60. In this embodiment, the generating device 60 is connected by a lever member 61. The lever member 61 is provided in an elongated shape. A D-shaped hole portion 61a is provided at one end of the lever member 61. The D-shaped rotating shaft 41 engages with the hole portion 61a. The lever member 61 is fixed to the rotating shaft 41. The other end of the lever member 61 is provided with a groove 61b that extends in the longitudinal direction of the lever member 61 and is open toward the tip of the other end of the lever member 61. The pin member 51a11 is slidably engaged with the groove 61b. The lever member 61 rotates (swings) as shown by the arrow F in FIG. 4 by the pin member 51a11 sliding in the groove 61b as the movable member 51 moves. Note that other mechanisms than the lever member 61, such as a rack-and-pinion mechanism, may be used as long as they generate rotational motion according to the changed distance. By generating rotational motion according to the change in the distance between the first member 31 and the second member 32, which is changed by the slide device 50, a smaller rotation detection device can be used compared to a linear motion detection device such as a slide volume that detects changes in the amount of linear movement, and therefore the electronic device for the musical instrument can be made smaller.

[0025] The amount of rotation of lever member 61 is set within the range of the electrically effective rotation angle of rotation detection device 40. That is, the shape of lever member 61 is set so as to cover the tolerance range of the electrically effective rotation angle of rotation detection device 40. Specifically, for example, when the electrically effective rotation angle of rotation detection device 40 is 60°±5°, the amount of rotation of lever member 61 (swing angle of lever member 61) is set to 66°. At this time, the amount of movement of pin member 51a11 (i.e., the stroke of movable member 51) is set to 20 mm.

[0026] As shown in Fig. 8, the fixed member 52 of the sliding device 50 is provided with a fixed member body 52a. The fixed member body 52a is a substantially U-shaped sheet metal member with the open side facing upward when viewed from the left-right direction. The fixed member body 52a has a front side plate 52a1 on the front side, a rear side plate 52a2 on the rear side, and a bottom plate 52a3 that connects the front side plate 52a1 and the rear side plate 52a2 at their lower sides. An opening hole 52a31 is provided in the substantially central portion of the bottom plate 52a3, and the second shaft member 32d is inserted through it.

[0027] A nut member 52b is provided at approximately the center in the left-right direction inside the front side plate 52a1, the rear side plate 52a2, and the bottom plate 52a3 of the fixing member main body 52a. The nut member 52b is provided with fixed bent portions 52a11 and 52a21 formed by bending a part at approximately the center of the front side plate 52a1 and the rear side plate 52a2, and fixes the nut member 52b to the fixing member main body 52a. A male screw portion 32d1 is provided at the tip portion of the second shaft member 32d, and is screwed into the nut member 52b.

[0028] When the second shaft member 32d is rotated (i.e., the second member 32 is rotated), the fixed member 52 (fixed member main body 52a) moves relative to the case 20 due to the screw structure of the nut member 52b and the male screw portion 32d1, and the distance between the movable member 51 and the fixed member 52 (the distance between the movable member 51 and the fixed member 52 in a steady state) can be adjusted. For example, the distance S1 in FIG. 4 changes. A stopper 32d5 is provided at the tip of the second shaft member 32d coaxially with the second shaft member 32d. The diameter of the stopper 32d5 is set to be larger than the diameter of the opening hole 52a31, so that the male screw portion 32d1 (second shaft member 32d) can be restricted from escaping from the nut member 52b. In this embodiment, a screw member is used as the stopper 32d5. The combination of the male screw portion 32d1 and the nut member 52b can also be provided on the movable member 51 side.

[0029] Four coil springs 53 (expandable members) are provided between the movable member 51 and the fixed member 52. The coil springs 53, which are expandable members, are provided so as to be expandable and contractable according to the tension applied to the first member 31 and the second member 32. The four coil springs 53 are arranged in a row, two on each side, front to back. Locking rings 53a are provided at the top and bottom ends of the coil springs 53. Meanwhile, hook-shaped locking claws 51a4, 52a4 (see Figs. 7 and 8) are provided on the left and right sides of the movable member main body 51a and the fixed member main body 52a, two on each side, front to back. The locking rings 53a of each coil spring 53 are hooked onto the locking claws 51a4, 52a4, respectively.

[0030] The four coil springs 53 are arranged in a stretched state. Therefore, the movable member 51 and the fixed member 52 are biased by the four coil springs 53 in a direction in which the relative distance between the movable member 51 and the fixed member 52 decreases. In other words, the four coil springs 53 bias the movable member 51 (first member 31) toward the fixed member 52 (second member 32) fixed to the case 20.

[0031] A sliding member 54 is provided on each of the left and right sides of the movable member 51 and the fixed member 52. One sliding member 54 is provided on each of the left and right sides of the movable member 51, and one sliding member 54 is provided on each of the left and right sides of the fixed member 52. As shown in FIG. 8, the sliding member 54 is formed in a substantially rectangular shape that is long in the front-rear direction, and has two engaging protrusions 54a that protrude inward, and two engaging recesses 54b that are provided corresponding to the engaging protrusions 54a. The engaging protrusions 54a are formed in a substantially U-shape. The engaging recesses 54b are recessed and communicate with the substantially U-shaped open portion of the engaging protrusions 54a. The engaging protrusions 54a are inserted into and engaged with the locking rings 53a and 53b of the coil spring 53. The locking claws 51a4 and 52a4 of the movable member main body 51a and the fixed member main body 52a are inserted into the engaging recesses 54b.

[0032] The sliding member 54 is integrated with the movable member 51 and the fixed member 52 by inserting the engaging protrusions 54a into the locking rings 53a and 53b of the coil spring 53 and inserting the locking claws 51a4 and 52a4 into the engaging recesses 54b.

[0033] Here, as shown in FIG. 9, the rear case 22 is provided with a rear side sliding rail 22a (see also FIG. 3 and FIG. 4) that is provided as a rectangular convex strip that is long in the vertical direction. A front side sliding rail 21a (see also FIG. 3) that is long in the vertical direction and formed in a stepped shape in the cross-sectional view of FIG. 9 is provided at a position facing the rear side sliding rail 22a in the front case 21. The rear side sliding rail 22a is connected to two boss parts 22g at the top and bottom. Similarly, the front side sliding rail 21a is connected to two boss thread parts 21g at the top and bottom. The sliding member 54 is provided with sliding parts 54c (front side sliding part 54c1, rear side sliding part 54c2) that are formed in a stepped shape on the front side and rear side. The front side sliding part 54c1 engages with the front side sliding rail 21a, and the rear side sliding part 54c2 engages with the rear side sliding rail 22a. The sliding member 54 is guided in the vertical direction by a sliding rail 20a consisting of a front sliding rail 21a and a rear sliding rail 22a.

[0034] The sliding member 54 of the movable member 51 is guided by the sliding rail 20a. The fixed member 52 is moved relative to the case 20 when adjusting tensions T1 and T2, which will be described later, and at this time, the sliding member 54 of the fixed member 52 is guided by the sliding rail 20a.

[0035] 3, a battery box 22d is provided in the rear case 22 between the movable member 51 and the fixed member 52 and between the left and right coil springs 53. An electronic circuit board 70 is provided on the front side of the battery box 22d. The electronic circuit board 70 is fixed to the rear case 22 by screwing it with screw members 71 to four substantially cylindrical bosses 22e standing on the inside of the rear case 22. In addition, wiring 73 for supplying power to the rotation detection device 40 and the electronic circuit board 70 is provided on the front side of the battery box 22d.

[0036] 4, when a player puts the strap 210 of the musical instrument electronic device 10 attached to the strap 210 of the electric guitar 200 on his shoulder, tensions T1 and T2 are applied to the first member 31 and the second member 32. Here, since the second shaft member 32d is fixed in the vertical direction (axial direction) relative to the case 20, the second member 32 and the fixed member 52 are fixed in the vertical direction relative to the case 20. Meanwhile, since the first member 31 and the movable member 51 are provided so as to be movable in the vertical direction relative to the case 20, the first member 31 and the movable member 51 move upward to a position where the biasing force T3 of the four coil springs 53 and the tension T1 are balanced, and the electric guitar 200 is put in a state of being put on the shoulder (i.e., a steady state).

[0037] When the player presses the electric guitar 200 downward, the tensions T1 and T2 increase, so that the tensions T1 and T2 are applied to the first member 31 and the second member 32, and the movable member 51 (first member 31) moves upward relative to the case 20 against the elastic force (biasing force T3) of the four coil springs 53. Then, as shown in FIG. 10, the lever member 61 swings around the rotation shaft 41 of the rotation detection device 40 (specifically, counterclockwise in FIG. 10). The rotation detection device 40 transmits the amount of rotation of the rotation shaft 41 to the receiving device 150 via the communication unit 75. The control signal input unit 140, which receives the amount of rotation detected by the rotation detection device 40 from the receiving device 150, controls the effect unit 120 to impart an effect according to the amount of rotation.

[0038] When the performer presses electric guitar 200 downward, case 20 appears to move downward together with electric guitar 200, and when the performer loosens or releases the force pressing electric guitar 200, case 20 appears to rise. Therefore, the performer can grasp the strength of the applied effect from the amount of movement of case 20 (the amount of movement of case 20 moving relative to first member 31).

[0039] The tensions T1 and T2 applied to the first member 31 and the second member 32 can be adjusted by moving the position of the fixed member 52 relative to the case 20. This adjustment can be performed by rotating the second member 32 (i.e., the second shaft member 32d) and moving the fixed member 52 up and down relative to the case 20 using the screw-fit structure of the nut member 52b and the male screw portion 32d1. When the fixed member 52 is moved upward (moving the fixed member 52 in a direction that shortens the distance between the movable member 51 and the fixed member 52), the extension of the coil spring 53 is reduced, so that the tensions T1 and T2 applied to the first member 31 and the second member 32 can be reduced. Therefore, the electric guitar 200 can be pressed with a lighter force. Conversely, moving the fixed member 52 downward (moving the fixed member 52 in a direction that increases the distance between the movable member 51 and the fixed member 52) increases the extension of the coil spring 53, and therefore it is possible to increase the tensions T1, T2 applied to the first member 31 and the second member 32. As a result, by adjusting the tensions T1, T2 applied to the first member 31 and the second member 32, it is possible to adjust the coil spring 53 so that it does not extend due to the weight of the electric guitar 200 itself.

[0040] Second embodiment A second embodiment of the present invention will be described with reference to Figs. 11 to 13. In the musical instrument electronic device of this embodiment, instead of the first shaft member 31d of the first member 31 being directly connected to the movable member 51 in the musical instrument electronic device 10 of the first embodiment, the first shaft member 31d of the first member 31 is connected to the movable member 51A via link members (first link member 81, second link member 82) of the link mechanism 80. Therefore, Figs. 11 to 13 mainly show and describe the first member 31, the movable member 51A, the generating device 60, and the rotation detection device 40. In the following, the same members and parts as those of the first embodiment are denoted by the same reference numerals, and their description will be omitted or simplified.

[0041] The movable member body 51Aa of the movable member 51A is made of a sheet metal material having a substantially U-shape in a side view. The movable member body 51Aa has a front side plate 51Aa1, a rear side plate 51Aa2, and a bottom plate 51Aa3. The front side plate 51Aa1 is provided with a lever member connection part 51Aa11 that extends downward like a tongue piece. The lever member connection part 51Aa11 is provided with a pin member 51Aa12, which is connected to the other end of the lever member 61. The other end of the lever member 61 as the generating device 60 in this embodiment is an elongated hole. In addition, two locking claws 51Aa4 are provided on each of the left and right sides of the bottom plate 51Aa3.

[0042] A connection member 31d3 is fixed to the tip of the first shaft member 31d of the first member 31. The connection member 31d3 is provided with a pin member 31d4 whose axis faces the front-rear direction.

[0043] The link mechanism 80 includes a first link member 81 and a second link member 82. The first link member 81 and the second link member 82 are formed substantially symmetrically. The first link member 81 has a front side first link plate 81a on the front side and a rear side first link plate 81b on the rear side. Similarly, the second link member 82 has a front side second link plate 82a on the front side and a rear side second link plate 82b on the rear side. The distance between the front side second link plate 82a and the rear side second link plate 82b is set to be larger than the distance between the front side first link plate 81a and the rear side first link plate 81b.

[0044] The front side first link plate 81a and the rear side first link plate 81b, and the front side second link plate 82a and the rear side second link plate 82b are respectively connected by connecting plates 81g, 82g provided in the form of thick plates on the upper parts of the first link member 81 and the second link member 82, fixed fulcrum pins 81c, 82c, and movable member connecting pins 81d, 82d, which will be described later.

[0045] At one end of the first link member 81 and the second link member 82, fixed fulcrum pins 81c and 82c serving as a fixed fulcrum 85a are fixed to the first link member 81 and the second link member 82, respectively. The fixed fulcrum pins 81c and 82c are pivotally supported by the case 20 (see Figs. 1 and 3) so as to be rotatable about their axes. The other ends of the first link member 81 and the second link member 82 are provided with long holes 81e and 82e. A pin member 31d4 of the connection member 31d3 is inserted through the long holes 81e and 82e. The pin member 31d4 is connected to the first shaft member 31d, i.e., the first member 31, via the connection member 31d3. The other ends of the first link member 81 and the second link member 82 are provided as a first member connection fulcrum 85b consisting of the long holes 81e and 82e and the pin member 31d4.

[0046] The first link member 81 and the second link member 82 are provided with movable member connecting pins 81d, 82d between the fixed fulcrum pins 81c, 82c and the long holes 81e, 82e. The movable member connecting pin 81d is fixed to the first link member 81 so as to pass through the front side first link plate 81a and the rear side first link plate 81b of the first link member 81. Similarly, the movable member connecting pin 82d is fixed to the second link member 82 so as to pass through the front side second link plate 82a and the rear side second link plate 82b.

[0047] The movable member connecting pins 81d, 82d are inserted into long holes 85c1 provided in the front side plate 51Aa1 and the rear side plate 51Aa2 of the movable member 51A corresponding to the movable member connecting pins 81d, 82d. The long holes 85c1 are provided long in the left-right direction. Between the fixed fulcrum 85a and the first member connecting fulcrum 85b in the first link member 81 and the second link member 82, a movable member connecting fulcrum 85c is formed by the movable member connecting pins 81d, 82d and the long holes 85c1.

[0048] When the first member 31 moves upward, the first member connection fulcrum 85b moves upward, and the first link member 81 and the second link member 82 swing around the fixed fulcrum 85a. The first link member 81 swings clockwise, and the second link member 82 swings counterclockwise. Then, the movable member connection fulcrum 85c moves upward, so that the movable member 51A also moves upward. Due to the upward movement of the movable member 51A, the lever member 61 also swings via the lever member connection part 51Aa11 and the pin member 51Aa12. The lever member 61 swings counterclockwise. In this embodiment, the distance from the fixed fulcrum 85a to the first member connection fulcrum 85b and the distance from the fixed fulcrum 85a to the movable member connection fulcrum 85c are set so that the movement amount of the movable member 51A is half the movement amount of the first member 31.

[0049] As described above, according to the embodiment of the present invention, the electronic instrument 10 for a musical instrument has a first member 31 to be connected to the strap 210, a second member 32 to be connected to the musical instrument, which is an electric guitar 200, a generating device 60 that generates a rotational motion in response to the distance between the first member 31 and the second member 32 that changes due to tension applied to the first member 31 and / or the second member 32, and a rotation detection device 40 that detects the amount of rotation of the rotational motion generated by the generating device 60.

[0050] As a result, for example, the first member 31 and the second member 32 move away from each other in response to the tension applied to the first member 31 and / or the second member 32. Then, the generating device 60 generates a rotational motion in response to a change in the distance between the first member 31 and the second member 32 (the distance between the first member 31 and the second member 32, or the distance between the first member 31 and the second member 32, or the relative distance between the first member 31 and the second member 32). The amount of rotation of the generated rotational motion is detected by the rotation detection device 40. Thus, the amount of rotation of the rotation detection device 40 is transmitted to the receiving device 150 as a control signal, and the effector device 100 can be controlled. Therefore, the force applied to the strap can be easily recognized as a physical change, and the musical tone can be controlled. In addition, by generating a rotational motion in response to a change in the distance between the first member 31 and the second member 32, a smaller rotation detection device can be used compared to a linear motion detection device such as a slide volume, and the electronic device for the musical instrument can be made smaller in size.

[0051] Furthermore, the electronic instrument device 10 has a slide device 50 that changes the distance between the first member 31 and the second member 32 by tension. This allows the distance between the first member 31 and the second member 32 to be changed in response to tension by a slide mechanism with a simple configuration.

[0052] The slide device 50 also has a coil spring 53 which is an elastic member that expands and contracts according to the tension applied to the first member 31 and the second member 32. Specifically, the coil spring 53 is provided between the movable member 51 and the fixed member 52. The tension applied to the first member 31 and the second member 32 can be generated, for example, by forming the first member 31 and the second member 32 so that they can slide while being applied with a predetermined resistance, but by using the coil spring 53 which is an elastic member, it is possible to easily return the first member 31 and the second member 32 while generating tension in them with a simple configuration. The elastic member may be another elastic member such as an elastic member.

[0053] Furthermore, the musical instrument electronic device 10 includes a movable member 51 that is connected to the first member 31 and is movable in response to tension, and the generating device 60 has a lever member 61 that connects the movable member 51 to the rotation detection device 40, and generates rotational motion by rotating the lever member 61 in response to the movement of the movable member 51. This makes it possible to use a small rotation detection device that detects the amount of rotation of the rotational motion, and thus makes it possible to miniaturize the musical instrument electronic device.

[0054] Moreover, the movable member 51 has a pin member 51a11, and the lever member 61 has a groove portion 61b with which the pin member 51a11 slidably engages, and the lever member 61 rotates as the pin member 51a11 slides within the groove portion 61b in accordance with the movement of the movable member 51. This makes it possible to smoothly generate rotational motion with a simple configuration.

[0055] The electronic instrument 10 also includes a fixed member 52 that is connected to the second member 32 and does not move in response to tension. The second member 32 can also be configured to be connected to a movable member, but by connecting one of the first member 31 and the second member 32 to the movable member and the other to the fixed member, it becomes easier to visually confirm the movement of the first member 31 or the second member 32 connected to the movable member.

[0056] Moreover, the first member 31 is connected to the movable member 51 via a link mechanism 80 including link members (a first link member 81 and a second link member 82), and the link member has a fixed fulcrum 85a provided at one end, a first member connection fulcrum 85b provided at the other end so as to connect to the first member 31, and a movable member connection fulcrum 85c provided between the fixed fulcrum 85a and the first member connection fulcrum 85b so as to connect to the movable member 51. This makes it possible to adjust and set the ratio of the amount of movement of the movable member 51 to the amount of movement of the first member 31.

[0057] Further, the second member 32 has a male screw portion 32d1, and the fixed member 52 has a nut member 52b that screws into the male screw portion 32d1. This makes it possible to move the fixed member 52 and adjust the initial value of the tension of the coil spring 53 between the movable member 51 and the fixed member 52, that is, the control amount of the effector device 100 that corresponds to the force pressing down on the electric guitar 200. This makes it possible to adjust the coil spring 53 so that it does not stretch due to the weight of the electric guitar 200 itself.

[0058] In addition, the first member 31 or the second member 32 has an external thread portion 32d1, and the movable member 51 or the fixed member 52 has a nut member 52b that screws into the external thread portion 32d1. In this embodiment, the external thread portion 32d1 is provided on the second member 32, and the nut member 52b is provided on the fixed member 52. This makes it possible to adjust the tension applied to the first member 31 and the second member 32, and to adjust the degree of the effector effect according to the force with which the electric guitar 200 is pressed.

[0059] Further, a stopper 32d5 for restricting the male thread portion 32d1 from coming off the nut member 52b is provided at the tip of the male thread portion 32d1, thereby restricting the second shaft member 32d from coming off the nut member 52b.

[0060] Moreover, the electronic instrument 10 for a musical instrument includes a case 20 that houses the generating device 60, the case 20 has a sliding rail 20a, and the movable member 51 has a sliding member 54 that is guided by the sliding rail 20a. This allows the movable member 51 to move smoothly in a straight line.

[0061] In addition, the first member 31 or the second member 32 has pin members 31e perpendicular to the direction in which tension is applied, and the movable member 51 has a plurality of grooves 51b2 that are provided radially and engage with the pin members 31e. In this embodiment, the pin members 31e are provided in the first member 31. This allows the orientation of the case 20 to be easily changed.

[0062] Furthermore, the amount of rotation of the rotational motion generated by the generating device 60, which corresponds to the amount of change in the distance between the first member 31 and the second member 32, is within the range of the electrically effective rotation angle of the rotation detection device 40. This allows the generating device 60 to cover the entire range of the electrically effective angle of the rotation detection device 40.

[0063] The electronic instrument device 10 also includes a communication unit 75 capable of communicating with a receiving device 150, which is an external device, and the communication unit 75 generates a sound to which an effect has been applied by transmitting a detection value detected by the rotation detection device 40 to the receiving device 150. This allows the effector device 100 to be controlled while playing, without being restricted by the position of the effector device 100, by using the electronic instrument device 10 that can control the degree of the effect while recognizing it as a physical amount of movement.

[0064] Although some embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope and spirit of the invention, and are included in the scope of the invention and its equivalents described in the claims. [Explanation of symbols]

[0065] 1 Performance system 10 Electronic equipment for musical instruments 20 Case 20a Slide rail 20b Fixed part 20c Fixed part 21 Front case 21a Front sliding rail 21b Fixed part 21b1 Groove part 21c Fixed part 21g Boss thread part 22 Rear case 22a Rear sliding rail 22b Fixed part 22b1 Groove part 22c Fixing part 22d Battery box 22e boss 22g boss part 23 Operation section 23a Power button 23b Operation button 23c Operation button 23d LED 24 Screw parts 31 first member 31a strap pin 31a1 Axis 31b Plate 31b1 shaft hole 31b2 cylindrical portion 31c Pin 31d First shaft member 31d1 Shaft hole 31d2 Large diameter section 31d3 Connection member 31d4 Pin member 31e Pin member 31f Opening 32 second member 32a elastic member 32b Plate 32b1 Large hole 32b2 Small hole 32b3 Shaft hole 32b4 Cylindrical part 32c Pin 32d Second shaft member 32d1 Male threaded portion 32d2 Large diameter section 32d3 Fixed large diameter section 32d4 Shaft hole 32d5 Screw member 32f Opening 33 Bush 33a flange portion 34 damper member 35 Damper member 40 Rotation detection device 41 Rotating shaft 50 Slide device 51 Movable member 51A Movable member 51Aa Movable member body 51Aa1 Front side plate 51Aa11 Lever member connection part 51Aa12 Pin member 51Aa2 Rear side plate 51Aa3 Bottom plate 51Aa4 Locking claw 51a Movable member body 51a1 Front side plate 51a11 Pin member 51a2 Rear side plate 51a3 Bottom plate 51a31 Opening hole 51a4 Locking claw 51b Angle adjustment member 51b1 Opening 51b2 Groove portion 51b3 Circular recess 51b4 Swelling part 52 Fixing member 52a Fixing member body 52a1 Front side plate 52a11 Fixed bent part 52a2 Rear side panel 52a21 Fixed bent part 52a3 Bottom plate 52a31 Opening hole 52a4 Locking claw 52b Nut member 53 Coil spring 53a Locking ring 53b Locking ring 54 Sliding member 54a Engagement protrusion 54b Engagement recess 54c Sliding portion 54c1 Sliding part 54c2 Sliding part 60 Generating device 61 Lever member 61a Hole 61b Groove 70 Electronic circuit board 71 Screw member 73 Wiring 75 Communication section 80 link mechanism 81 first link member 81a: Front side first link plate 81b: Rear side first link plate 81c Fixed fulcrum pin 81d Movable member connecting pin 81e Long hole 81g Connection plate 82 second link member 82a front side second link plate 82b Rear side second link plate 82c Fixed fulcrum pin 82d Movable part connecting pin 82e Long hole 82g Connection plate 85a Fixed support 85b first member connection fulcrum 85c movable member connection fulcrum 85c1 Long hole 100 Effector device 110 Electrical signal input section 120 Effect section 130 Electric signal output section 140 Control signal input section 150 Receiver 200 Electric guitar 210 Strap 220 Guitar Cable 300 Guitar Amplifier

Claims

1. A first member to be connected to the strap side; A second member that is connected to the instrument; A generator that generates a rotational motion according to a distance between the first member and the second member that is changed by a tension applied to the first member and / or the second member; a rotation detection device for detecting the amount of rotation of the rotational motion generated by the generating device; 2. An electronic instrument for a musical instrument comprising:

2. The electronic device for a musical instrument according to claim 1 , further comprising a sliding device that changes the distance between the first member and the second member by the tension.

3. The electronic device for a musical instrument according to claim 2 , wherein the sliding device has an elastic member that expands and contracts in response to the tension.

4. a movable member connected to the first member and movable in response to the tension, The electronic device for a musical instrument according to claim 1 , wherein the generating device has a lever member that connects the movable member and the rotation detection device, and generates the rotational motion by rotating the lever member in response to movement of the movable member.

5. The movable member has a pin member, the lever member has a groove with which the pin member slidably engages, 5. The electronic device for a musical instrument according to claim 4, wherein the lever member rotates by the pin member sliding in the groove as the movable member moves.

6. The electronic device for a musical instrument according to claim 4 , further comprising a fixing member connected to the second member so as not to move in response to the tension.

7. 7. The electronic device for a musical instrument according to claim 6, further comprising an elastic member between the movable member and the fixed member, the elastic member being elastic in response to the tension.

8. the first member is connected to the movable member via a link mechanism including a link member; 5. The electronic device for a musical instrument according to claim 4, wherein the link member has a fixed fulcrum provided on one end side, a first member connection fulcrum provided on the other end side so as to connect to the first member, and a movable member connection fulcrum provided between the fixed fulcrum and the first member connection fulcrum so as to connect to the movable member.

9. The first member or the second member has a male thread portion, The electronic device for a musical instrument according to claim 6 , wherein the movable member or the fixed member has a nut member that screws into the male thread portion.

10. 10. The electronic device for a musical instrument according to claim 9, wherein a stopper is provided at a tip of the male threaded portion to prevent the male threaded portion from coming off the nut member.

11. A case for housing the generating device, The case has a slide rail, 5. The electronic device for a musical instrument according to claim 4, wherein the movable member has a sliding member guided by the sliding rail.

12. The first member or the second member has a pin member perpendicular to the direction in which the tension is applied, The electronic instrument for a musical instrument according to claim 4 , wherein the movable member includes a plurality of grooves arranged radially and adapted to be engaged with the pin members.

13. 2. The electronic device for a musical instrument according to claim 1, wherein the amount of rotation of the rotational motion generated by the generating device, which corresponds to the amount of change in the distance between the first member and the second member, is within a range of an effective electrical rotation angle of the rotation detection device.

14. A communication unit capable of communicating with an external device is provided, The electronic device for a musical instrument according to claim 1 , wherein the communication section generates a sound with an effect by transmitting a detection value detected by the rotation detection device to the external device.

Images