JP5782714B2 - Pedal device and electronic keyboard instrument provided with the same - Google Patents

Description

  The present invention relates to a pedal device suitable for use with an electronic keyboard instrument, and an electronic keyboard instrument including the pedal device.

  An acoustic piano, which is a natural keyboard instrument, has a mechanism that generates a sound by hitting a hammer against a string in response to a keystroke. The sound produced by an acoustic piano varies in sound and magnitude depending on the strength and speed of the keystrokes. The acoustic piano is also equipped with a pedal for controlling the reverberation of the sound. This pedal is operated by a foot, and usually two or three pedals are provided on one piano. When there are two pedals, the right pedal as viewed from the performer is a damper pedal, and the left pedal is a soft pedal. In the case of a grand piano or the like with three pedals, a damper pedal, a sostenuto pedal, and a soft pedal are in order from the right side.

  Here, the damper pedal releases a silencer (damper) for stopping the vibration of the strings for all the strings. When the damper pedal is depressed, the reverberant sound can be continued even after releasing the key after pressing the key. The soft pedal can reduce the volume of the sound produced by pressing the key when depressed. The sostenuto pedal is for sustaining only the sound of the pressed key. Such a plurality of pedals included in the acoustic piano has a structure in which different mechanisms are operated. Therefore, a reaction force peculiar to each pedal (reaction force against the depression force) is generated, and a peculiar operation feeling (pedal touch) based on the reaction force occurs.

  On the other hand, there is an electronic piano as an electronic keyboard instrument that simulates the timbre, operability, and appearance of an acoustic piano as described above. As an electronic piano, for example, as shown in Patent Document 1, there is one equipped with a pedal that functions in the same way as a damper pedal, a sostenuto pedal, and a soft pedal in an acoustic piano. However, in the case of an electronic piano, it is not necessary to perform an operation of moving the damper away from the string because it is not actually played by stringing like an acoustic piano. Instead, the processing corresponding to the pedal operation is electrically performed, and the sound generation equivalent to the operation of the pedal is performed. Therefore, the mechanism of the pedal device itself is simple. For example, a reaction force application member made of a coil spring or the like is installed between a pedal and a bottom plate that are attached to the frame so as to be able to stroke in the vertical direction, and the reaction force application member An upward reaction force is given to the pedal by urging of.

  Thus, although the reaction force is applied to the pedal of the electronic piano by a coil spring or the like, usually, the plurality of pedals have the same configuration provided with the same parts. Therefore, unlike a plurality of pedals included in an acoustic piano, there is no difference in touch for each pedal. In addition, as shown in Patent Document 2, there is a pedal provided with a unit for changing the touch stepwise from the middle of the pedal stroke, but even in this case, there are a plurality of basic touches caused by the reaction force of the coil spring. The pedals are identical to each other. Therefore, the touch is greatly different from a plurality of pedals included in a natural keyboard instrument such as an acoustic piano.

Japanese Patent Laid-Open No. 2001-22355 JP 2004-334008 A

  The present invention has been made in view of the above points, and an object of the present invention is to provide a pedal device capable of faithfully reproducing a pedal touch of a natural keyboard instrument such as an acoustic piano with a simple configuration, and a pedal device including the pedal device. Is to provide an electronic keyboard instrument.

The present invention for solving the above problems includes a plurality of pedals (10-1, 10-2, 10-3) and a plurality of pedals (10-1, 10-2, 10-3) which are stroked by a stepping operation. Each pedal (10-1, 10-2, 10-3) is provided corresponding to each of the pedals (10-1, 10-2, 10-3). -2, 10-3) a plurality of reaction force applying means (40-1, 40-2, 40-3), and a pedal device (1) comprising a plurality of reaction force applying means ( 40-1, 40-2, 40-3) are formed by winding an elastic wire in the shape of a coil , and in the axial direction according to the stepping operation of the pedal (10-1, 10-2, 10-3) a plurality of spring members causing the urging force by deformation (40-1, 40-2 and 40-3 But only, the plurality of spring members (40-1, 40-2, 40-3) is, their shape, material of the elastic material, attached to each pedal (10-1, 10-2, 10-3) The position and each of the corresponding pedals (10-, 10-2, 10-3) are made different from each other by at least one of the initial deformation amounts at the initial position where the pedals (10-1, 10-2, 10-3) are not depressed. 1, 10-2, 10-3) are characterized in that the characteristics of the reaction force applied to them are different from each other.

  According to the pedal device of the present invention, at least the shape of the plurality of spring members corresponding to each of the plurality of pedals, the material of the elastic material, the attachment position with respect to the pedal, and the initial deformation amount at the initial position where the pedal is not depressed. By making one of them different from each other, it is possible to set different reaction force characteristics for the stepping operation of each of the plurality of pedals, like a plurality of pedals included in a natural keyboard instrument such as an acoustic piano. As a result, the touch of the plurality of pedals included in the electronic keyboard instrument can be brought close to the touch of the plurality of pedals included in the natural keyboard instrument such as an acoustic piano, while the number of parts is as simple as the conventional configuration. .

  Moreover, in said pedal apparatus concerning this invention, the 1st pedal (10 located on the right side seeing from the operator who operates this pedal apparatus as several pedals (10-1, 10-2, 10-3). -1), a second pedal (10-2) located in the center, and a third pedal (10-3) located on the left side are provided, and a plurality of spring members (40- 1, 40-2, 40-3), the first to third spring members (40-1, 40-2) corresponding to the first to third pedals (10-1, 10-2, 10-3), respectively. , 40-3) is provided, and the initial reaction force immediately after the start of the stepping operation on each pedal (10-1, 10-2, 10-3) is caused by the second spring member (40-2). The initial reaction force against the second pedal (10-2) is the largest, and then the first spring member 40-1) and an initial reaction force against the first pedal (10-1) by the third spring member (40-3) and an initial reaction force against the third pedal (10-3). Good. According to this configuration, it is possible to obtain a touch that reproduces characteristics approximate to the reaction force characteristics of the three pedals (damper pedal, sostenuto pedal, and soft pedal) provided in the acoustic piano.

  Moreover, in said pedal apparatus, the initial reaction force with respect to the 1st thru | or 3rd pedal (10-1, 10-2, 10-3) is the 1st thru | or 3rd pedal (10-1, 10-2, 10-). 3) By making at least any two of the initial deformation amounts of the first to third spring members (40-1, 40-2, 40-3) at the initial position where the stepping operation is not performed differ from each other. The initial deformation amount of the third spring member (40-3) is minimized among the initial deformation amounts of the first to third spring members (40-1, 40-2, 40-3). It is good to be set to.

  The pedal (soft pedal) installed on the left side of the three pedals provided in the acoustic piano is the pedal having the smallest initial reaction force immediately after the stepping operation is started among the three pedals. According to said structure concerning this invention, it becomes possible to reproduce the characteristic approximated to the reaction force characteristic of three pedals with which such an acoustic piano is provided. Therefore, it is possible to more faithfully simulate the acoustic piano pedal touch.

  In the above pedal device, at least any two of the plurality of spring members (40-1, 40-2, 40-3) have different shapes and materials from each other. In this case, the colors of the spring members (40-1, 40-2, 40-3) having different shapes or materials may be different from each other.

  A plurality of spring members having different characteristics of reaction force applied to the pedal due to different shapes or materials often have the same or similar appearance. Therefore, when manufacturing the pedal device, in the step of assembling the spring member corresponding to each pedal, there is a possibility that a plurality of spring members having different shapes or materials may be mistakenly assembled. Therefore, as in the above-described configuration according to the present invention, if the colors of the spring members having different shapes or materials are different from each other, it is possible to effectively assemble a plurality of spring members in the assembly operation of the spring members. Can be prevented. Thereby, the assembly efficiency of a pedal apparatus can be improved.

The electronic keyboard instrument according to the present invention includes a plurality of pedals (10-1, 10-2, 10-3) and a plurality of pedals (10-1, 10-2, 10-3) that are stroked by a stepping operation. Each pedal (10-1, 10-2, 10-3) is provided corresponding to each of the pedals (10-1, 10-2, 10-3). -2, 10-3) An electronic keyboard instrument having a pedal device (1) provided with a plurality of reaction force applying means (40-1, 40-2, 40-3) applied to the pedal device, As described above, any one of the pedal devices (1) according to the present invention is provided. According to this electronic keyboard instrument, with a simple configuration, a plurality of pedals provided in the electronic keyboard instrument can reproduce touches similar to those provided in a natural keyboard instrument such as an acoustic piano. It becomes an electronic keyboard instrument that can be obtained.
In addition, the code | symbol in parenthesis here has shown the code | symbol of the corresponding component of embodiment mentioned later as an example of this invention.

  According to the pedal device and the electronic keyboard instrument including the pedal device according to the present invention, it is possible to faithfully reproduce a plurality of pedal touches of a natural keyboard instrument such as an acoustic piano with a simple configuration.

It is a top view which shows the pedal apparatus concerning one Embodiment of this invention. It is a sectional side view of a pedal apparatus, and is a XX arrow line view of FIG. It is a figure for demonstrating operation | movement of a pedal apparatus. It is a sectional side view which shows the other structural example of a pedal apparatus. It is a graph which shows distribution of the reaction force with respect to depression operation of three pedals which a grand piano has.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. 1 and 2 are views showing a pedal device 1 according to an embodiment of the present invention. FIG. 1 is a plan view of the pedal device 1, and FIG. 2 is a side sectional view of the pedal device 1. It is a XX arrow directional view. The pedal device 1 shown in these drawings is installed at a position close to a foot below a keyboard (not shown) in an electronic keyboard instrument such as an electronic piano, and is stepped on with a foot by a player. The pedal device 1 includes a plurality of (in this embodiment, three) pedals 10-1, 10-2, 10-3 and a plurality of pedals 10-1, 10-2, 10- which are stroked by a stepping operation. A plurality of (three in the present embodiment) coil springs (spring members) 40-1, 40-2, 40-3 provided corresponding to each of the three. The coil springs 40-1, 40-2, and 40-3 are displaced according to the strokes of the pedals 10-1, 10-2, and 10-3, and the reaction force generated by the displacement is applied to each pedal 10-. It is a reaction force applying means applied to 1, 10-2, 10-3.

  That is, as shown in FIG. 1, the pedal device 1 includes a first pedal 10-1 located on the right side as viewed from the player of the electronic keyboard instrument, a second pedal 10-2 located in the center, and a left side. Three pedals with the third pedal 10-3 located are provided. Here, the first, second, and third pedals 10-1, 10-2, and 10-3 each have a function corresponding to a damper pedal, a sostenuto pedal, and a soft pedal (an electronic keyboard instrument) in a grand piano (acoustic piano). (Pronunciation characteristics).

  The three pedals 10-1, 10-2, 10-3 provided in the pedal device 1 and their peripheral parts have basically the same structure. Therefore, below, the 1st pedal 10-1 equivalent to a damper pedal and its periphery structure and operation | movement are demonstrated as a representative of each pedal 10-1, 10-2, 10-3 which the pedal apparatus 1 has. In this case, the first pedal 10-1 is referred to as a pedal 10, and the first coil spring 40-1 that applies a reaction force to the first pedal 10-1 is referred to as a coil spring 40. In the following description, of the two sides of the pedal 10 in the longitudinal direction, the player's side of the electronic keyboard instrument that depresses the pedal 10 with his / her foot is referred to as the front or the front, and the opposite side is referred to as the back or the rear. In the following description, the width direction or the left-right direction refers to the arrangement direction of the first to third pedals 10-1, 10-2, 10-3 in the pedal device 1, or the width direction of the pedal 10 (relative to the longitudinal direction). (Both directions).

  As shown in FIG. 2, around the pedal 10, a frame 20 that rotatably supports the pedal 10 and a coil spring 40 that applies a reaction force against the depression of the pedal 10 are provided. The frame 20 is formed in a substantially rectangular box shape by appropriately bending a plate-like member made of metal or the like. The frame 20 is formed in a horizontally long shape extending over positions corresponding to the three pedals 10-1, 10-2, 10-3. Openings 23 and 24 are formed at the attachment positions of the pedal 10 on the front wall 21 and the rear wall 22 of the frame 20, respectively.

  The pedal 10 is made of a substantially flat member formed in a long shape, and the front side is an operation portion 11 that is operated by stepping on with a foot, and the rear side is an attachment portion 12 that is attached to the frame 20. The pedal 10 includes a thin plate-like upper wall 10a and both side walls 10b and 10b extending in the longitudinal direction when viewed from the front of the frame 20, and has a substantially U-shaped cross-sectional shape opening downward. Further, a bent piece 13b formed by bending the edge of the opening 13a upward is provided near the rear end of the mounting portion 12.

  The opening 23 provided in the front wall 21 of the frame 20 is formed in a rectangular shape larger than the cross section of the pedal 10. On the other hand, the opening 24 provided in the rear wall 22 is formed in a substantially U shape along the cross section of the pedal 10. The pedal 10 is inserted into the frame 20 from the opening 23, the mounting portion 12 is installed in the frame 20, and the rear end protrudes rearward from the opening 24. At this time, the bent piece 13b of the pedal 10 abuts on the upper edge of the opening 24 of the rear wall 22, and these are rotatably engaged. The pedal 10 is installed so that the operation portion 11 can swing in the vertical direction around the fulcrum 14 where the bent piece 13b and the opening 24 are engaged.

  A coil spring 40 is installed below the pedal 10 in the frame 20. The coil spring 40 is a spring member formed by winding a wire having elasticity such as metal in a coil shape, and generates an elastic force (biasing force) by being compressed and deformed in the axial direction. The coil spring 40 is placed on the bottom wall 25 on the front side in the frame 20. The upper end of the coil spring 40 is in contact with the lower surface 10 c of the pedal 10. The pedal 10 is stationary in a state where it is placed on the coil spring 40 at a position where the stepping operation is started (hereinafter, this position is referred to as an “initial position”). The pedal 10 is supported at its initial position by the fulcrum 14 at the rear of the mounting portion 12 and by the coil spring 40 at the front of the mounting portion 12 and is substantially horizontal in the front-rear direction.

  A circuit board 30 is installed behind the coil spring 40 in the frame 20. Although detailed illustration is omitted, the circuit board 30 can be provided with a switch contact for converting the operation of the pedal 10 into an electrical output. An adjuster 34 is attached to the lower surface side of the bottom wall 25 of the frame 20. The adjuster 34 includes a shaft portion 34a and a pedestal portion 34b fixed to the lower end of the shaft portion 34a. Although not shown in detail, a screw hole (see FIG. (Not shown) by screw engagement. The shaft portion 34a is attached near the center in the width direction of the bottom wall 25, and the lower end of the pedestal portion 34b comes into contact with a floor surface (not shown). The adjuster 34 can adjust the height position of the pedestal portion 34b with respect to the bottom wall 25 of the frame 20 by rotating the shaft portion 34a and the pedestal portion 34b. Thereby, the height position of the pedal apparatus 1 with respect to a floor surface can be adjusted.

  An upper limit stopper 15 for defining the upper limit position of the pedal 10 is installed on the upper surface 10 d side of the pedal 10 in the frame 20. The upper limit stopper 15 is in contact with the upper wall 29 of the frame 20 with the pedal 10 in the initial position (uppermost position).

  On the other hand, a bent portion 26 that is bent toward the inside of the frame 20 is formed at the lower end side of the opening 23 provided in the front wall 21 of the frame 20, and a pedal is formed on the upper surface of the bent portion 26. A lower limit stopper 17 for defining 10 lower limit positions is attached. The lower limit stopper 17 is made of a cushioning material for alleviating the impact caused by the contact of the pedal 10, and faces the lower ends of the side walls 10b, 10b of the pedal 10 at the initial position with a predetermined distance. It is installed as follows. Further, the bent portion 26 and the lower limit stopper 17 are slightly inclined downward as the surfaces thereof move from the back side to the front side.

  The operation of the pedal device 1 having the above configuration will be briefly described. FIG. 3 is a view for explaining the operation of the pedal device 1 and shows a state where the pedal 10 is depressed. When the performer depresses the pedal 10 in the initial position shown in FIG. 2, the pedal 10 rotates about the fulcrum 14 while the coil spring 40 is compressed as shown in FIG. go. At this time, a reaction force due to the urging force of the coil spring 40 is applied to the pedal 10. When the pedal 10 is further stepped on in this state, the lower ends of both side walls 10b, 10b of the pedal 10 come into contact with the lower limit stopper 17 and the pedal 10 stops at the lower limit position. On the other hand, when the force depressing the pedal 10 at the lower limit position is loosened, the pedal 10 is raised by the reaction force of the coil spring 40 and returned to the initial position. The first, second, and third pedals 10-1, 10-2, and 10-3 of the pedal device 1 are counteracted by corresponding coil springs 40-1, 40-2, and 40-3, as will be described later. Although the force characteristics are different from each other, the basic operations are common to each other.

  As described above, the pedal device 1 of the present embodiment includes the first pedal 10-1 located on the right side as viewed from the player of the electronic keyboard instrument, the second pedal 10-2 located in the center, and the left side. Three pedals including the third pedal 10-3 are provided. The first, second, and third coil springs 40-1, 40-2, and 40-3 corresponding to the first, second, and third pedals 10-1, 10-2, and 10-3, respectively, are installed. Yes. The first, second, and third coil springs 40-1, 40-2, and 40-3 are located below the first, second, and third pedals 10-1, 10-2, and 10-3 in the frame 20, respectively. The first, second, and third pedals 10-1, 10-2, and 10-3 are displaced according to the strokes of the respective stepping operations, and the reaction force generated by the displacement is first and second. The third pedals 10-1, 10-2 and 10-3 are provided.

  And in the pedal apparatus 1 of this embodiment, the 1st, 2nd, 3rd coil springs 40-1, 40-2, 40-3 are those shapes, materials, and each pedal 10-1, 10-2, 10. -3, and at least one of the initial compression amounts at the initial positions where the pedals 10-1, 10-2, and 10-3 are not depressed, the corresponding pedals 10- The characteristics of the reaction force applied to 1, 10-2 and 10-3 are set to be different from each other. Hereinafter, this point will be described in detail.

  In order to make the shapes of the first, second, and third coil springs 40-1, 40-2, and 40-3 different from each other, specifically, the coil springs 40-1, 40-2, and 40-3 are configured. The thicknesses of the wire rods are different from each other, the number of turns of the coil springs 40-1, 40-2, 40-3 is different from each other, or the diameters of the coil springs 40-1, 40-2, 40-3 are different from each other. It is possible to either Thus, the characteristics of the reaction force applied to the corresponding pedals 10-1, 10-2, 10-3 can be made different from each other.

  When the first, second, and third coil springs 40-1, 40-2, 40-3 are made of different materials, specifically, the coil springs 40-1, 40-2, 40-3 are respectively Different wire materials are used as the wire material made of the elastic material. Thereby, the characteristics of the reaction force applied to the corresponding pedals 10-1, 10-2, 10-3 can be made different from each other.

  Further, when the first, second, and third coil springs 40-1, 40-2, and 40-3 have different shapes or materials, the coil springs 40-1, 40-2, and 40 that have different shapes or materials are used. -3 preferably has different colors. This is due to the following reasons. That is, the coil springs 40-1, 40-2, and 40-3 having different reaction force characteristics due to different shapes or materials often have the same or similar appearance. Therefore, when manufacturing the pedal device 1, each of the shapes or materials differing in the process of assembling the coil springs 40-1, 40-2, 40-3 corresponding to the pedals 10-1, 10-2, 10-3. There is a possibility that the coil springs 40-1, 40-2, and 40-3 are mistakenly assembled. Therefore, as described above, if the colors of the coil springs 40-1, 40-2, and 40-3 having different shapes or materials are different from each other, the coil springs 40-1, 40-2, and 40-3 are made different from each other. It is possible to effectively prevent mistaken assembly. Thereby, the assembly efficiency of the pedal apparatus 1 can be improved.

  In this case, in order to make the colors of the coil springs 40-1, 40-2, and 40-3 different from each other, different color paints are applied to the coil springs 40-1, 40-2, and 40-3. Can be colored. Furthermore, in this case, each of the coil springs 40-1, 40-2, 40-3 may be colored entirely or only a part thereof.

  Further, the mounting positions of the first, second and third coil springs 40-1, 40-2 and 40-3 with respect to the first, second and third pedals 10-1, 10-2 and 10-3 are made different from each other. The coil springs 40-1, 40-2, 40-3 in the longitudinal direction of each pedal 10-1, 10-2, 10-3 (the longitudinal direction of the pedal device 1 indicated by arrows L1, L2 in FIG. 1). It is possible to make the installation positions different from each other. Thereby, the characteristics of the reaction force applied to the corresponding pedals 10-1, 10-2, 10-3 can be made different from each other.

  Further, the first, second, and third coil springs 40-1, 40-2, 40- at the initial positions where the first, second, and third pedals 10-1, 10-2, 10-3 are not depressed. 3, the spacers having a predetermined thickness dimension are provided between the coil springs 40-1, 40-2, 40-3 and the bottom wall 25 of the frame 20, as shown in FIG. When the coil springs 40-1, 40-2, and 40-3 in a state of being compressed in advance by a predetermined amount are installed between the spacer member 28 and the pedals 10-1, 10-2, and 10-3 with the member 28 interposed therebetween. Good. At that time, the thickness dimensions of the spacer members 28 corresponding to the first, second, and third coil springs 40-1, 40-2, and 40-3 are made different from each other, or the first, second, and third coil springs 40- The first, second, and third pedals 10-1, 10-2, and 10-3 are initially installed by installing the spacer member 28 only on one of 1, 40-2, and 40-3. The initial compression amounts of the first, second, and third coil springs 40-1, 40-2, and 40-3 at the positions can be made different from each other. In addition to the above, the spacer member 28 may be interposed between the lower surfaces of the pedals 10-1, 10-2, 10-3 and the upper ends of the coil springs 40-1, 40-2, 40-3. .

  And in the pedal apparatus 1 of this embodiment, at least one of the shape, material, mounting position, and initial compression amount of the first, second, and third coil springs 40-1, 40-2, and 40-3 as described above. Are made different from each other so that the reaction force characteristics of the first, second, and third pedals 10-1, 10-2, and 10-3 with respect to the stepping operation are changed to the reaction force characteristics of the three pedals provided in the grand piano. The characteristics are set to approximate. Hereinafter, this point will be described. FIG. 5 is a graph showing the distribution of the load (reaction force) with respect to the displacement caused by the depression operation of the three pedals of the grand piano. In the graph of the figure, the horizontal axis represents the amount of pedal displacement (depression amount) from the initial position (depression start position), and the vertical axis represents the load (reaction force) with respect to the pedal depression. In this graph, the reaction force characteristic of the damper pedal located on the right side when viewed from the grand piano player is indicated by a one-dot chain line, the reaction force characteristic of the sostenuto pedal located in the center is indicated by a dotted line, and the software characteristic located on the left side The pedal reaction force characteristics are indicated by solid lines. In the graph of FIG. 5, only the reaction force characteristic in the process of depressing the pedal is shown.

  As shown in the graph of FIG. 5, the reaction force characteristics with respect to the depression of the three pedals of the grand piano are different from each other. In particular, the reaction force in the initial stage immediately after the depression of the pedal is started, the central sostenuto pedal has the largest reaction force, followed by the right damper pedal and the left soft pedal in this order. That is, the pedal (soft pedal) installed on the left side of the three pedals included in the grand piano is the pedal having the smallest initial reaction force among the three pedals.

  Therefore, also in the pedal device 1 of the present embodiment, the magnitude of the initial reaction force at the time when the stepping operation on the first to third pedals 10-1, 10-2, 10-3 is started is determined by the sostenuto pedal. The center second pedal 10-2 to which the function is assigned is the largest, then the right first pedal 10-1 to which the damper pedal function is assigned, and the left third pedal 10-3 to which the soft pedal function is assigned. It is better to set them in order. As a method for setting the reaction force characteristics of the pedals 10-1, 10-2, 10-3 as described above, the first to third pedals 10-1, 10-2, 10-3 are as follows. The initial compression amounts of the first to third coil springs 40-1, 40-2, 40-3 at the initial position where the stepping operation is not performed may be set different from each other. Furthermore, in that case, the third of the first to third coil springs 40-1, 40-2, 40-3 that applies reaction force to the first to third pedals 10-1, 10-2, 10-3, respectively. It sets so that the initial compression amount of the 3rd coiled spring 40-3 which provides reaction force to the pedal 10-3 may become the minimum.

  According to said method, the characteristic close | similar to the reaction force characteristic of three pedals with which a grand piano is provided is reproducible with a simple structure. Therefore, it is possible to more faithfully reproduce the touches of a plurality of pedals included in the grand piano.

  In general, it is assumed that a pedal included in a pedal device for an electronic keyboard instrument is operated with a foot. Therefore, also in the pedal device 1 of the present embodiment, the load applied to the pedals 10-1, 10-2, 10-3 and the frame 20 is much larger than the load applied to the keyboard and the like, and the frame 20 which supports the load is applied. Is relatively susceptible to deformation. Moreover, in the structure in which the three pedals 10-1, 10-2, 10-3 are mounted side by side on one frame 20, like the pedal device 1 of the present embodiment, the second pedal 10-2 installed in the center. The first and third pedals 10-1 and 10-3 installed on the right side and the left side are installed at positions close to the free ends (left and right ends) of the frame 20. Therefore, if the reaction forces of the first and third coil springs 40-1 and 40-3 that apply reaction force to the first and third pedals 10-1 and 10-3 are too strong, the frame 20 may be deformed. There is. For this reason, the reaction force of the first and third pedals 10-1 and 10-3 cannot be set so strongly. On the other hand, since the second coil spring 40-2 that applies a reaction force to the central second pedal 10-2 is relatively less likely to be deformed in the frame 20, the first and third coil springs 40- It is possible to set the reaction force stronger than 1,40-3. For this reason as well, the magnitude of the initial reaction force at the time when the stepping operation on the first to third pedals 10-1, 10-2, 10-3 is started is determined as described above. It is easy to set so as to be in the order of 10-2, the first pedal 10-1, and the third pedal 10-3. It is also easy to set the initial compression amount of the third coil spring 40-3 disposed on the left side of the three coil springs 40-1, 40-2, 40-3 to the smallest compression amount.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the technical idea described in the claims and the specification and drawings. Is possible. For example, in the above-described embodiment, the pedal apparatus 1 including the three pedals 10-1, 10-2, and 10-3 has been described as an example. However, the pedals included in the pedal apparatus according to the present invention include three pedal apparatuses. The number is not limited to two. In that case, by making at least one of the shape of the two coil springs corresponding to each of the two pedals, the material, the attachment position to the pedal, and the initial compression amount at the initial position where the pedal is not depressed, The characteristics of the reaction force applied to the corresponding pedals are made different from each other. In that case, it can be set so as to have a characteristic that approximates the reaction force characteristic of the pedal of a natural keyboard instrument having two pedals such as an upright piano. In addition, since the pedal device of a general keyboard instrument often includes three pedals, it is most effective to include three pedals as in the pedal device of the present embodiment. If there are a plurality of pedals provided in such a pedal device, the above two or four or more may be used.

  In the above-described embodiment, the three pedals 10-1, 10-2, 10-3 included in the pedal device 1 are all reaction forces against the stepping operation by only the coil springs 40-1, 40-2, 40-3. However, as a pedal device according to the present invention, other members (for example, elastic rubber members) are provided in addition to the coil spring as a member for applying a reaction force to the pedal. You may do it. In that case, you may install the said other member only with respect to either of several pedals. Moreover, you may install the said other member so that reaction force may be given to a pedal in steps in the middle of the depression process of a pedal.

  Moreover, in the said embodiment, as a spring member which provides reaction force with respect to the pedals 10-1, 10-2, 10-3, coil springs 40-1, 40- formed by winding an elastic wire in a coil shape. 2 and 40-3 are shown, but the spring member according to the present invention is a spring member having another configuration such as a plate-like spring member in addition to the coil springs 40-1, 40-2, and 40-3. May be.

DESCRIPTION OF SYMBOLS 1 ... Pedal apparatus, 10-1 (10) ... 1st pedal, 10-2 ... 2nd pedal, 10-3 ... 3rd pedal, 10a ... Upper wall, 10b ... -Both side walls, 10c ... lower surface, 11 ... operation part, 12 ... mounting part, 14 ... fulcrum, 15 ... upper limit stopper, 17 ... lower limit stopper, 20 ... frame, 25 ... bottom wall, 28 ... spacer member, 40-1 (40) ... first coil spring (first spring member), 40-2 ... second coil spring (second spring member), 40 -3 ... Third coil spring (third spring member)

Claims (5)

A plurality of pedals that stroke by depressing operation;
A plurality of reaction force applying means provided corresponding to each of the plurality of pedals, displacing according to a stroke caused by a depression operation of each pedal, and applying a reaction force generated by the displacement to each pedal; A pedal device,
The plurality of reaction force applying means are only a plurality of spring members that are formed by winding an elastic wire in a coil shape and that generate an urging force by being deformed in the axial direction in accordance with a stepping operation of the pedal.
The plurality of spring members are different from each other in at least one of their shapes, the material of the elastic material, the attachment position with respect to each pedal, and the initial deformation amount at an initial position where each pedal is not depressed. Thus, the characteristics of the reaction forces applied to the corresponding pedals are different from each other. As the plurality of pedals, there are provided three pedals: a first pedal located on the right side as viewed from an operator operating the pedal device, a second pedal located in the center, and a third pedal located on the left side. And
As the plurality of spring members, first to third spring members corresponding to the first to third pedals are provided,
The initial reaction force immediately after the stepping operation on each pedal is started has the largest initial reaction force on the second pedal by the second spring member, and then the initial reaction force on the first pedal by the first spring member. 2. The pedal device according to claim 1, wherein the pedal device is set to be in the order of force and initial reaction force with respect to the third pedal by the third spring member. The initial reaction force with respect to the first to third pedals is at least any two of the initial deformation amounts of the first to third spring members at an initial position where the first to third pedals are not depressed. Set differently from each other,
The pedal device according to claim 2, wherein among the initial deformation amounts of the first to third spring members, the initial deformation amount of the third spring member is set to be a minimum. At least any two of the plurality of spring members are different from each other in their shape and material.
The pedal device according to claim 1 or 2, wherein the plurality of spring members having different shapes or materials have different colors. A plurality of pedals that stroke by depressing operation;
A plurality of reaction force applying means provided corresponding to each of the plurality of pedals, displacing according to a stroke caused by a depression operation of each pedal, and applying a reaction force generated by the displacement to each pedal; An electronic keyboard instrument having a pedal device,
An electronic keyboard instrument comprising the pedal device according to any one of claims 1 to 4 as the pedal device.

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