Pedal device for performance

Abstract

The present invention provides a pedal device for performance, which can improve the operating feeling of the pedal during the stepping operation and quickly reflect the performance intention of the performer. The pedal device for performance includes a pedal for the performer to step on with the foot; a rod that axially moves corresponding to the stepping operation of the pedal; and a detection component that can detect the moving amount of the rod and output a detection signal corresponding to the moving amount. The detection component is composed of an optical sensor that can detect the displacement amount of the rod in the axial direction in a non-contact manner.

Description

Technical Field

[0001] The present invention relates to a pedal device for playing, which includes a pedal for a player to step on with the foot, a rod that moves axially in response to the stepping operation of the pedal, and a detection component that can detect the amount of movement of the rod and output a detection signal corresponding to the amount of movement. Background Art

[0002] In some electronic drums, there is a pedal device for playing, which includes a pedal that a player can step on with the foot during playing. For example, for the current pedal device for playing, a device including a pedal, a shaft that rotates integrally with the pedal according to the stepping operation of the pedal, and a detection component that can detect the amount of pedal stepping (see Japanese Patent Laid-Open No. 9-97075) can be cited. The detection component in the pedal device for the current technology is configured such that when the pedal is stepped on, a pressing force is applied to the sensor pattern through the sensor rubber, causing a change in the resistance of the sensor pattern. Summary of the Invention

[0003] However, in the above current technology, since the pressing force is applied to the sensor pattern through the sensor rubber according to the stepping operation of the pedal, the elastic force of the sensor rubber is transmitted to the player, resulting in the problem that a real bottom touch that makes the player feel comfortable when playing the drums cannot be obtained. In addition, when the stepping force of the pedal slows down, the recovery speed of the sensing rubber is not synchronized with the operation speed of the pedal, resulting in the inability to quickly reflect the player's playing intention.

[0004] In view of the above situation, the present invention provides a pedal device for playing that can improve the operation feeling when stepping on the pedal for operation and quickly reflect the player's playing intention.

[0005] The present invention provides a pedal device for playing, which includes: a pedal for a player to step on with the foot; a rod that moves axially in response to the stepping operation of the pedal; and a detection component that can detect the amount of movement of the rod and output a detection signal corresponding to the amount of movement, and the detection component is composed of a non-contact sensor that can detect the axial displacement amount of the rod in a non-contact manner.

[0006] Wherein, the pedal device for playing further includes: a stop component disposed at an arbitrary position of the rod to limit the movement of the rod when the pedal is stepped on to the maximum stepping position; and a detected component disposed on the stop component to move integrally with the rod and the stop component, and enabling the detection component to detect the positions of the rod and the stop component.

[0007] Wherein, the stop component has a predetermined weight and can function as a counterweight.

[0008] Wherein, the stopping component is guided in the axial direction of the rod and is capable of moving together with the rod.

[0009] Wherein, the pedal and the rod are connected by a linkage assembly capable of converting the rocking motion of the pedal into the linear motion of the rod.

[0010] Wherein, the detection component is composed of an optical sensor, which irradiates light to the detected component and receives the reflected light from the detected component to detect the positions of the rod and the stopping component.

[0011] Wherein, the detected component is composed of a disc-shaped reflector and is arranged in a rotatable manner with the rod as the center.

[0012] Wherein, the pedal device for performance further includes: a pushing component for pushing the rod; and a pushing force holding component for holding the pushing force of the pushing component in an adjustable manner.

[0013] Wherein, the detection component is composed of a non-contact sensor capable of detecting the axial displacement amount of the rod in a non-contact manner. Therefore, the operation feeling during the pedal stepping operation can be improved, and the performance intention of the performer can be quickly reflected.

[0014] Wherein, the present invention provides a stopping component, which is arranged at an arbitrary position of the rod and restricts the movement of the rod when the pedal is stepped on to the maximum stepping position; and a detected component, which is arranged on the stopping component so as to move integrally with the rod and the stopping component and enables the detection component to detect the positions of the rod and the stopping component. Therefore, the descending process of the pedal can be reasonably adjusted by appropriately adjusting the setting position of the stopping component relative to the rod, and regardless of the setting position of the stopping component, the separation dimension between the detection component and the detected component can remain unchanged at the lower limit position of the rod. Therefore, even if the setting position of the stopping component relative to the rod is arbitrarily adjusted, it is not necessary to change the setting of the detection component at the maximum stepping position of the pedal.

[0015] Wherein, the stopping component has a predetermined weight and can function as a counterweight. Therefore, inertia can be provided during the stepping operation of the pedal, and the operation feeling of the performer can be further improved. In addition, the stopping component can simultaneously have the counterweight function of improving the operation feeling and the limiting function of the rod at the maximum stepping position of the pedal.

[0016] Wherein, the stopping component is guided in the axial direction of the rod and is capable of moving together with the rod. Therefore, the counterweight can move in the sliding direction of the rod, further improving the operation feeling.

[0017] Among them, the pedal and the rod are connected by a linkage assembly capable of converting the swinging motion of the pedal into the linear motion of the rod. Therefore, the stepping operation of the pedal can be reliably and appropriately converted into the linear motion of the rod.

[0018] Among them, the detection assembly is composed of an optical sensor. The optical sensor irradiates light on the detected assembly and receives the reflected light from the detected assembly to detect the positions of the rod and the stopper assembly. Therefore, the axial displacement amount of the rod can be stably and reliably detected in a non-contact manner.

[0019] Among them, the detected assembly is composed of a disc-shaped reflector and is arranged to be rotatable about the rod. Therefore, even when the rod rotates about its axis, the light irradiated from the optical sensor can be reliably received and reflected.

[0020] Among them, since the present invention includes a pushing assembly for pushing the rod; and a pushing holding assembly for holding the pushing force of the pushing assembly in an adjustable manner, the feeling during the pedal stepping operation can be arbitrarily changed. Description of the Drawings

[0021] Figure 1 is a perspective view of the overall appearance of a performance pedal device (before stepping operation) according to an embodiment of the present invention;

[0022] Figure 2 is a three-view drawing of the same performance pedal device (before stepping operation);

[0023] Figure 3 is a sectional view taken along the Figure 2 III-III line in

[0024] Figure 4 is a sectional view taken along the Figure 2 IV-IV line in

[0025] Figure 5 is a perspective view of the overall appearance of the same performance pedal device (after stepping operation);

[0026] Figure 6 is a three-view drawing of the same performance pedal device (after stepping operation);

[0027] Figure 7 is a sectional view taken along the Figure 6 VII-VII line in

[0028] Figure 8 is a sectional view taken along the Figure 6 VIII-VIII line in

[0029] Figure 9 is a four-view drawing of the stopper assembly in the same performance pedal device;

[0030] Figure 10 are four views of a link component in the same pedal device for performance;

[0031] Figure 11 are a front view and a plan view of a reflector in the same pedal device for performance.

[0032] Symbol description: 1 pedal device for performance; 2 bottom plate; 3 mounting part; 4 pedal; 5 link component; 6 rod; 7 stop component; 7a hammer part; 7b abutting part; 7c communication hole; 7d through hole; 7e connection groove; 7f sliding surface; 8 connection component; 9 reflector (detected component); 10 optical sensor (detecting component); 11 pushing component (spring); 12 accommodating part; 12a opening; 13 housing; 13a accommodating space; 13aa internal thread part; 13b opening; 13c insertion hole; 14 adjusting component; 15a abutted part; 15b abutted part; 16 control unit; 17 performance unit; f output end; g pushing and holding component; g1 external thread part; g2 receiving part Detailed implementation mode

[0033] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

[0034] The pedal device 1 for performance according to this embodiment is connected to an electronic drum or the like (performance unit 17) through the control unit 16. As Figures 1 to 8 shown, the pedal device 1 for performance includes a bottom plate 2, a pedal 4, a rod 6, a stop component 7, a connection component 8, a reflector 9 (detected component), an optical sensor 10 (detecting component), a pushing component 11, an accommodating part 12, a housing 13, and abutted parts 15a and 15b.

[0035] The bottom plate 2 is composed of a plate-like member and can be placed on the floor surface. The mounting part 3 is fixed to the proximal end portion of the bottom plate 2, and the accommodating part 12 is connected to the distal end portion of the bottom plate 2. The proximal end portion of the pedal 4 is connected to the mounting part 3 through a shaft La, so that the pedal 4 can be supported in a manner of rocking operation around the shaft La as the center. The accommodating part 12 is composed of a resin molded product such as ABS or nylon, so that the rod 6 accommodated therein can move in the axial direction L.

[0036] On the pedal 4, the performer can perform a stepping operation with the foot. The pedal 4 can be composed of an aluminum plate-like member, and its shape corresponds to the shape of the foot. The distal end portion of the pedal 4 is formed to be bent downward. This bent portion is connected to one end of a steel link component 5 through a shaft Lb. One end of this link component 5 is connected to the distal end portion of the pedal 4 through a shaft Lb, and the other end thereof is connected to the rod 6 through a shaft Lc.

[0037] Specifically, the connecting rod assembly 5 is connected to the distal end of the pedal 4 so as to be rotatable about an axis Lb as its center, and is also connected to the rod 6 so as to be rotatable about an axis Lc as its center. Thus, the rocking motion of the pedal 4 is converted into linear motion of the rod 6. Therefore, when the player depresses the pedal 4 to perform a rocking operation, the depressing force is transmitted to the rod 6 via the connecting rod assembly 5, causing the rod 6 to move linearly in the axial direction L (longitudinal direction).

[0038] The rod 6 can be composed of a steel bar with a circular cross section and can move in the axial direction L according to the stepping operation of the pedal 4. The lower end of the rod 6 is provided with a push component 11. The push component 11 is composed of a spring and can push the rod 6 upward. Figure 3 and Figure 4 As shown, the push assembly 11 is disposed in a receiving space 13a formed in the housing 13 to apply a push force when the rod 6 moves downward. In addition, an insertion hole 13c is formed in the receiving space 13a of the housing 13, through which the lower end portion of the rod 6 can pass. The rod 6 can be guided by the opening edge of the insertion hole 13c to move upward and downward.

[0039] In this embodiment, a push-holding component g is provided at the lower portion of the push-holding component 11 in the receiving space 13a. The push-holding component g maintains the push-holding force of the push-holding component 11 in an adjustable manner. Figure 3 As shown, the push-holding assembly g includes an external thread portion g1 formed on its outer peripheral surface and a receiving portion g2 that receives the lower end of the push-holding assembly 11. The push-holding assembly g is assembled by screwing the external thread portion g1 into the internal thread portion 13aa formed on the inner peripheral wall surface of the accommodation space 13a.

[0040] Therefore, when the push-holding assembly g is rotated, it moves upward and downward in the receiving space 13a, thereby adjusting the pushing force of the push-holding assembly 11. Therefore, since the push-holding assembly 11 for pushing the rod 6 and the push-holding assembly g for adjustably maintaining the pushing force of the push-holding assembly 11 are provided, the feeling of the pedal 4 during the stepping operation can be arbitrarily changed.

[0041] The stopper assembly 7 can be formed by a steel member and is arranged at any position of the upper end portion of the rod 6. When the pedal 4 is stepped on to the maximum stepping position (see FIG. Figures 5 to 8 ) limits the movement of rod 6. Figure 9 As shown, the stop assembly 7 includes a hammer portion 7a, an abutment portion 7b, a connecting hole 7c formed in the hammer portion 7a, a through hole 7d formed in the center of the stop assembly 7 and penetrating the stop assembly 7 in the up and down directions, a connecting groove 7e formed in the lower end portion of the stop assembly 7, and a sliding surface 7f.

[0042] The stopper assembly 7 can be set at any position on the rod 6 by inserting the rod 6 into the through-hole 7d and tightening an adjustment member 14, such as a screw, inserted into the communication hole 7c at any position relative to the outer circumference of the rod 6. Once set at any position on the rod 6, the stopper assembly 7 is assembled by inserting it through the insertion hole 12b formed in the accommodating portion 12. When the rod 6 moves in the axial direction L in response to a stepping operation on the pedal 4, the sliding surface 7f slides, guided by the opening edge of the insertion hole 12b.

[0043] The abutment portion 7b may be composed of a step portion formed at the boundary between the hammer portion 7a and the sliding surface 7f, and is configured to abut against the abutted portion 15a formed on the upper surface of the accommodating portion 12 when the pedal 4 is stepped on to the maximum stepping position during the movement of the rod 6 and the stop assembly 7 in the axial direction L according to the stepping operation of the pedal 4, so as to limit further movement of the rod 6.

[0044] That is to say, when the stop assembly 7 is set at any position of the rod 6, such as Figure 3 and 4 As shown, the contact portion 7b and the contacted portion 15a are separated by a dimension h. When the pedal 4 is stepped on, the contact portion 7b moves within the dimension h, allowing the rod 6 to descend. When the contact portion 7b moves downward to the dimension h, as shown in FIG. Figure 7 and 8 As shown, the stopper assembly 7 abuts against the abutted portion 15a and restricts the descent of the rod 6. Furthermore, according to this embodiment, the abutted portion 15a can be made of compressed felt or hard rubber, so that when the abutting portion 7b of the steel rod 6 abuts against the abutted portion 15a, the hard components come into contact with each other, thereby providing a firm bottoming feel.

[0045] Furthermore, the hammer 7a can be formed from a large-diameter portion formed on the upper portion of the stopper assembly 7 and have a predetermined weight, thereby functioning as a counterweight. The weight of the hammer 7a varies depending on its size and is appropriately adjusted in conjunction with the thrust of the thrust assembly to achieve an optimal playing feel. In this embodiment, the weight of the stopper assembly 7 is approximately 400 grams, with a range of approximately 250 to 1000 grams being suitable. When the pedal 4 is stepped on, the stopper assembly 7 is guided axially by the opening edge of the insertion hole 12b formed in the accommodating portion 12 and moves along with the rod 6.

[0046] The connecting groove 7e may be formed in the shape of a groove formed at the lower portion of the stopper assembly 7 and is configured so that the connecting assembly 8 made of ABS is connected thereto. Figure 10 As shown, the connecting component 8 can be composed of a slightly disc-shaped component, and is formed to include an annular protrusion 8a protruding from the center, a through hole 8b passing through the connecting component 8 in the up and down directions, a connecting surface 8c, and a protrusion 8d formed in the through hole 8b.

[0047] Insert the lower part of the stopper assembly 7 into the interior of the protrusion 8a, embed the protrusion 8d into the connection groove 7e for fixation, so that the connection assembly 8 is connected to the lower part of the stopper assembly 7, and the reflector 9 (detected assembly) is connected to the connection surface 8c of the connection assembly 8. Therefore, the reflector 9 is connected to the lower part of the stopper assembly 7 through the connection assembly 8.

[0048] This reflector 9 can be connected to the stopper assembly 7 to move integrally with the rod 6 and the stopper assembly 7, and is made of white foamed PVC, enabling the optical sensor 10 (detection assembly) to detect the positions of the rod 6 and the stopper assembly 7. As Figure 11 shown, the reflector 9 can be composed of a disk-shaped member, and has a connection surface 9b aligned and fixed with the connection surface 8c of the connection assembly 8 and a reflection surface 9c facing the optical sensor 10.

[0049] The reflection surface 9c can be composed of an annular surface for reflecting the light irradiated from the optical sensor 10 installed in the housing 13. For example, in order to reflect the light accurately and properly, it is preferably to perform mirror treatment on the reflection surface 9c or attach a white PVC foam board, etc. The reflector 9 (detected assembly) according to the present embodiment forms an insertion hole 9a at its central position, and the rod 6 is inserted through the insertion hole 9a so that the reflector 9 can rotate around the rod 6 as the center.

[0050] The optical sensor 10 (detection assembly) is a non-contact sensor that can detect the movement amount of the rod 6 and output a detection signal corresponding to the movement amount through the output terminal f, and can detect the displacement amount of the axial direction L of the rod 6 in a non-contact manner by optical detection. Specifically, the optical sensor 10 according to the present embodiment includes a light emitting part that irradiates light to the reflector 9 and a light receiving part that receives the reflected light, and the optical sensor 10 is arranged in the housing 13 fixed to the bottom plate 2. By allowing the irradiated light and the reflected light to pass through the opening 13b formed in the housing 13, the position of the rod 6 can be detected, and thus the displacement amount of the rod 6 can be detected. For example, the light emitting part can be composed of an LED that emits infrared light. When the reflected light from the reflector 9 is received by the light receiving part composed of a phototransistor, an electric signal corresponding to the received light amount will be output, thereby detecting the displacement amount of the rod 6.

[0051] That is, before the pedal 4 is stepped on, as Figure 3 shown, by detecting the separation dimension H1 (for example, 50 mm) between the optical sensor 10 and the reflector 9, it can be detected that the rod 6 and the stopper assembly 7 are in the initial position, and when the pedal 4 is stepped on to the maximum stepping position, as Figure 7As shown, by detecting the separation dimension H2 (e.g., 30 mm) between the optical sensor 10 and the reflector 9, it is possible to detect that the rod 6 and the baffle 7 are in the maximum descending position.

[0052] Although the optical sensor 10 according to the present embodiment is configured on the fixed side in the housing 13 and the reflector 9 is connected to the stopper assembly 7, the optical sensor 10 can also be connected to the stopper assembly 7 and the reflector 9 can be configured on the fixed side of the housing 13 or the like. That is, the optical sensor 10 can be configured on at least one of the stopper assembly 7 side and the fixed side, and the reflector 9 capable of reflecting the light emitted from the optical sensor 10 can be configured on the other of the stopper assembly 7 side and the fixed side.

[0053] The housing 13 is connected to the inside of the receiving portion 12, and the link assembly 5 can be inserted into the receiving portion 12 through the opening 12a. At the upper edge portion of the opening 12a, there is a portion 15b that can be abutted against the link assembly 5 in a state where no stepping operation is performed on the pedal 4. That is, in a state where no stepping operation is performed on the pedal 4, the link assembly 5 abuts against the portion 15b to keep the rod 6 in a predetermined position, and when the pedal 4 is stepped on to the maximum stepping position, the abutting portion 7b abuts against the portion 15a to limit the further downward movement of the rod 6. According to the present embodiment, the portion 15b can be made of felt or hard rubber, which can prevent noise when the steel link assembly 5 abuts against the portion 15b.

[0054] The detection signal of the optical sensor 10 is output to the control unit 16 through the output terminal f to be connected to a playing unit 17 such as an electronic drum, and is configured to generate a music sound signal according to the detection signal of the optical sensor 10 and the detection signal of the playing unit 17, and output the music sound signal to an external speaker. That is, the control unit 16 simultaneously processes the detection signal generated by the percussion playing unit 17 and the detection signal obtained from the optical sensor 10, and generates a music sound signal with the most appropriate intensity and timbre to be output from the external speaker.

[0055] According to the present embodiment, the detection assembly capable of detecting the movement amount of the rod 6 and outputting a detection signal corresponding to the movement amount is composed of a non-contact sensor (optical sensor 10) capable of detecting the axial displacement amount of the rod 6 in a non-contact manner. Therefore, the operation feeling during the stepping operation of the pedal 4 can be improved, and the playing intention of the player can be quickly reflected. In particular, since the detection assembly according to the present embodiment is composed of the optical sensor 10, which irradiates light to the detected assembly (reflector 9) and receives the reflected light from the detected assembly (reflector 9) to detect the positions of the rod 6 and the stopper assembly 7, the displacement amount of the rod 6 in the axial direction L can be stably and surely detected in a non-contact manner.

[0056] In addition, according to this embodiment, since the component to be detected is composed of the disc-shaped reflector 9 and is arranged in a rotatable manner with the rod 6 as the center, even when the rod 6 rotates about the axis, the light emitted from the optical sensor 10 can be surely received and reflected. When the cross-sectional shape of the rod 6 is not circular but another shape that cannot rotate about the axis, the reflector 9 (the component to be detected) does not have to be arranged to rotate around the rod 6 serving as the center.

[0057] In addition, since there is a stopper component 7 that is connected to an arbitrary position of the rod 6 and restricts the movement of the rod 6 when the pedal 4 is stepped on to the maximum stepping position; and a reflector 9 (the component to be detected) that is connected to the stopper component 7 and moves integrally with the rod 6 and the stopper component 7 and allows the detection component (optical sensor 10) to detect the positions of the rod 6 and the stopper component 7, the descending process of the pedal 4 can be arbitrarily adjusted by reasonably adjusting the setting position of the stopper component 7 relative to the rod 6, and regardless of the setting position of the stopper component 7, in the lower limit position of the rod 6, the separation dimension H2 between the detection component (optical sensor 10) and the component to be detected (reflector 9) (refer to Figure 7 ) can be kept unchanged.

[0058] That is to say, when the setting position of the stopper component 7 relative to the rod 6 is arbitrarily adjusted, with respect to the change in the separation dimension H1 (see Figure 3 ) between the detection component (optical sensor 10) and the component to be detected (reflector 9) in the upper limit position of the rod 6 (the position before the stepping operation on the pedal 4), in the lower limit position of the rod 6 (when the pedal 4 is stepped on to the maximum stepping amount), the separation dimension H2 (see Figure 7 ) between the detection component (optical sensor 10) and the component to be detected (reflector 9) remains unchanged. Therefore, even if the setting position of the stopper component 7 relative to the rod 6 is arbitrarily adjusted, it is not necessary to change the setting of the detection component (optical sensor 10) at the maximum stepping position of the pedal 4.

[0059] In addition, the stopper component 7 according to this embodiment has a predetermined weight and can function as a counterweight, so inertia can be provided during the stepping operation of the pedal 4, and the operation feeling of the performer can be further improved. In addition, the stopper component 7 can simultaneously have a counterweight function for improving the operation feeling and a limiting function for the rod 6 at the maximum stepping position of the pedal 4. In addition, the stopper component 7 according to this embodiment can be guided to move together with the rod 6 in the axial direction L of the rod 6, so the counterweight can move in the sliding direction (axial direction L) of the rod 6 to further improve the operation feeling.

[0060] In addition, according to the present embodiment, the pedal 4 and the rod 6 are connected by the link assembly 5, which can convert the rocking motion of the pedal 4 (the rocking motion about the axis La as the center) into the linear motion of the rod 6 (the linear motion in the axial direction L). Therefore, the stepping operation of the pedal 4 can be surely and appropriately converted into the linear motion of the rod 6. Additionally, as an alternative to the link assembly 5, the pedal 4 and the rod 6 can also be connected by another means (such as a cam, etc.) that can convert the rocking motion of the pedal 4 into the linear motion of the rod 6.

[0061] Although the embodiments of the present invention have been described above, the present invention is not limited thereto. For example, another non-contact sensor can be used instead of the optical sensor 10, such as a capacitance sensor that measures the distance between electrodes, an overcurrent displacement sensor that measures the overcurrent caused by a metal plate and a magnetic field, or a laser range finder. When using the optical sensor 10 according to the present embodiment, the reflecting surface 9c of the reflecting plate 9 (the detected component) can be a flat reflecting surface or a reflecting surface having a concave curved portion that can effectively collect and reflect light. In the present embodiment, the control unit 16 simultaneously processes the detection signal generated by the percussion playing unit 17 and the detection signal obtained from the optical sensor 10. However, the control unit 16 can generate music sounds only using the detection signal obtained from the optical sensor 10.

[0062] As long as the playing pedal device includes a detection component composed of a non-contact sensor that can detect the axial displacement amount of the rod in a non-contact manner, the present invention is applicable to playing pedal devices with different appearance shapes or playing pedal devices with additional functions.

Claims

1. A pedal device for performance, characterized in that, Comprising: A pedal for a player to step on with the foot; A rod that moves axially corresponding to the stepping operation of the pedal; A housing that houses the lower end portion of the rod; A detection assembly disposed in the housing, capable of detecting the amount of movement of the rod and outputting a detection signal corresponding to the amount of movement; A stop assembly provided at an arbitrary position of the rod to limit the movement of the rod when the pedal is stepped on to the maximum stepping position; And A detected assembly provided on the stop assembly to move integrally with the rod and the stop assembly, and enabling the detection assembly to detect the positions of the rod and the stop assembly, wherein the detection assembly is composed of a non-contact sensor capable of detecting the axial displacement amount of the rod in a non-contact manner.

2. The pedal device for performance according to claim 1, characterized in that, The stop assembly has a predetermined weight and can function as a counterweight.

3. The pedal device for performance according to claim 2, wherein The stop assembly is guided in the axial direction of the rod and can move together with the rod.

4. The pedal device for performance according to claim 1, characterized in that, The pedal and the rod are connected by a link assembly capable of converting the rocking motion of the pedal into the linear motion of the rod.

5. The pedal device for performance according to claim 1, characterized in that, The detection assembly is composed of an optical sensor that irradiates light to the detected assembly and receives the reflected light from the detected assembly to detect the positions of the rod and the stop assembly.

6. The pedal device for performance according to claim 5, wherein, The detected assembly is composed of a disk-shaped reflector and is provided in a rotatable manner with the rod as the center.

7. The pedal device for playing as claimed in claim 1, wherein, Comprising: A pushing assembly for pushing the rod; and A pushing holding assembly for holding the pushing force of the pushing assembly in an adjustable manner.

Images