Abstract:
[Problem] To provide an effector affixing device which facilitates the operation of the effector and, more specifically, which facilitates the replacement of the effector and prevents an operational mistake. [Solution] An effector affixing device comprises: an effector affixing base provided with an effector affixing means; and a separation member. The effector affixing base and the separation member are connected so as to be able to be separated from each other. A separation space having a height which allows shield wires to intersect each other is provided below the effector. The separation member comprises supports formed near the corners thereof and extending downward. Protrusions for binding the effector are provided to both side edges of the effector affixing base. The effector affixing base can be affixed so as to be tilted in the front-rear direction, and the front face of the effector is suitably illuminated by a lighting means.

Description:
TECHNICAL FIELD 
       [0001]    The present invention relates to an effector affixing device that facilitates an operation of an acoustic effector. In more detail, the present invention relates to an effector affixing device that facilitates replacement of an effector, prevents a shield line and others protruding from the effector from obstructing a switching operation, and avoids failures in operation of the effector. 
       BACKGROUND ART 
       [0002]    There is a musical instrument such as an electric guitar that is played in an arbitrary volume by changing sound generated by a sound source into an electrical signal. In an electric guitar or the like, a musical instrument itself and an amplifier are subjected to sound quality adjustment through an acoustic effector that produces various acoustic effects. As the effector, there are a single-function effector and a multi-effector having a plurality of effect functions implemented as one. In the multi-effector, a plurality of types of acoustic effects are stored, and any one of the effects can be selected. 
         [0003]    Further, as the single-function effector, there are a plurality of types of effectors, e.g., an equalizer that executes processing such as enhancing or attenuating a specific frequency or an enhancer that distorts a fundamental tone to produce an overtone and mixes this tone into actual sound, and acoustic effects vary depending on an order of connecting these effectors. Therefore, a performer changes the connection of the plurality of effectors in a concert hall and carries out, e.g., changing over a switch by his/her foot during performance so that desired acoustic effects can be obtained. 
         [0004]    In order to exert the acoustic effect required by a performer in a concert hall, specifically, a preset adjusted state may need to be changed depending on a situation, e.g., echo performance of sound in the concert hall, a state of an audience in the concert hall, balance with other musical instruments, a condition of the performer himself/herself, a change in supply voltage to the effector according to circumstances, and others. In such a case, since it is not easy to change to sound quality desired by the performer in the multi-effector in which an acoustic state is preset, there are many performers who rearrange and adjust the order of a plurality of continuous single-function effectors and control the acoustic effects at a time of performance. 
         [0005]    There are some effectors each comprising a dial switch configured to preset performance sound quality and a wah pedal switch that is disposed to a top portion of a housing like an accelerator pedal of a vehicle and operated by a toe to, e.g., change an amplifying frequency band. This type of effector is configured to be connected to any other effector through a shield line and aligned on a tabular effector board in the performer&#39;s desired order. 
         [0006]    However, as described above, the connection order of the effectors must be changed at a time of performance. To cope with this change, each effector is affixed on the effector board using, e.g., a hook-and-loop fastener or a double sided tape in the conventional examples. However, since the effector affixed on the effector board in advance comes off during transportation in some cases, Patent Document 1 suggests an affixing base that allows the effector to be fitted in a resin frame having pushing claws formed thereto and to be held in the frame using elastic force of the pushing claws. 
         [0007]    However, in a situation adopting the technology disclosed in Patent Document 1, holding force of the pushing claws is weakened as the base is repeatedly used, an accident that the effector is kicked and comes off at a time of switching using a toe or a shield line catches a toe to remove the effector is apt to occur, an operation of the effector is not easy, and a switching operation may be possibly erroneously performed to disable performance. Furthermore, at a time of replacing the effector, the shield line must be accommodated so that it does not obstruct performance when a pedal switch is operated, and there is a problem that replacement of the effector is not easy. 
         [0008]    Moreover, a performer selects a predetermined effector from a plurality of effectors based on a color of an effector housing on a stage, operates a wah pedal switch of the effector with his/her toe, and expresses music based on his/her artistic tastes. However, there is a problem that, on a dark stage or a stage in a lighting environment subjected to a dark change by lights-out, selecting a predetermined effector is difficult and an effector operation is not easy. 
       CITATION LIST 
     Patent Document 
       [0000]    
       
         Patent Document 1: Japanese Utility Model Application No. 2005-8610 
       
     
       SUMMARY OF INVENTION 
     Technical Problem 
       [0010]    The present invention relates to an effector affixing device that facilitates an operation of an effector and, more particularly, an object of the present invention is to provide an effector affixing device that facilitates replacement of an acoustic effector, prevents a shield line and others protruding from the effector from interfering with a switching operation, and avoids operation failures of the effector. 
       Solution to Problem 
       [0011]    A first invention according to the present invention provides an effector affixing device that affixes an acoustic effector on a plate material, wherein the effector affixing device comprises: an effector affixing base provided with effector affixing means; a separation member including supports erected below the vicinities of four corners of the effector affixing base, the effector affixing base and the separation member being separably coupled with each other, the effector affixing base comprises: a bottom plate that supports the effector; an effector holding piece erected from an edge portion of the bottom plate, and the effector affixing device comprises a separation space having a height that at least allows shield lines to intersect with each other below the bottom plate in a state that the effector affixing base is coupled with upper portions of the supports. 
         [0012]    The effector affixing device having the acoustic effector mounted thereon is affixed to the effector board made of the plate material placed at a feet of a performer. According to the first invention of the present invention, the effector affixing base constituting the effector affixing device can be separated from the separation member, and hence the replacement of the effector can be facilitated. Additionally, when the separation member is replaced with the separation member having a different height, changing an effector installation height can be facilitated. In a state that the plurality of effectors are aligned in the front-rear direction, in an operation for increasing an installation height of the rear effector apart from the performer, reducing an installation height of the front effector close to the performer, and manipulating the rear wah pedal switch, the front wah pedal switch is not erroneously operated. It is to be noted that, in the front-rear relationship, the side close to the performer is the front side and the side apart from the performer is the rear side (this is the same in the following description). Further, since the effector holding piece is formed to be erected from the edge portion of the effector affixing device, each effector can be held on the effector affixing base without being displaced in the horizontal direction. The effector may be directly affixed to the effector affixing base through screws. 
         [0013]    Furthermore, the separation space in which the shield lines intersect with each other and inserted between the front and rear supports and the left and right supports is assured below the effector affixing base. Even if the plurality of effectors are installed in the vertical and horizontal directions, inserting the shield lines, power supply line, and others into the separation space enables to prevent the shield line and others from being uplifted and placed above the effectors and also enables to arrange wiring lines on the effector board in the narrow range, whereby the wiring lines, e.g., the shield lines do not become obstacles when a toe is used to perform the switching operation. As a result, the operation of the wah pedal switch of each effector can be facilitated. Moreover, since a shield line socket on the effector side surface is placed away from the effector board, the shield line of an L-shaped terminal plug can be inserted into the effector, a shield line having a linear inserting portion of an I-shaped terminal plug does not have to be used, an end portion of the shield line does not extend to the rear side of each effector, and the effectors can be aligned at narrow intervals. 
         [0014]    In the effector affixing device according to the first invention, a second invention of the present invention is characterized in that the bottom plate comprises depressed portions each of which is formed near each corner portion and opened downward and a groove portion that is formed on a front side of the bottom plate and opened upward, the separation member comprises a substantially rectangular base plate that has the supports arranged near four corners thereof, the base plate has a plate body erected on a front edge portion thereof, each depressed portion allows each support to be fitted therein, an inner peripheral wall rear side of the depressed portion on a rear side has a locking jaw, a jaw portion that engages with the locking jaw is provided behind a head portion of each support on the rear side, a head portion of the plate body has a claw portion that engages with the groove portion, and the effector affixing base is coupled with the separation member when the locking jaw of the depressed portion on the rear side engages with the jaw portion of each support on the rear side and the groove portion engages with the claw portion in a state that the supports are fitted in the depressed portions. 
         [0015]    According to the second invention of the present invention, in a state that the supports of the separation member are fitted in the depressed portions of the effector affixing base, the locking jaws of the depressed portions on the rear side of the effector affixing base are engaged with the jaw portions on the rear side of the separation member, and the groove portion on the bottom plate upper portion of the effector affixing base is engaged with the claw portion extending from the base plate of the separation member. When the claw portion is unengaged and the front side of the effector affixing base is lifted, each effector can be readily removed together with the effector affixing base and disposed to the separation member at a different position, thereby changing the position. Additionally, when the effector affixing base is disposed to the separation member in such a manner that the jaw portions of the rear supports of the separation member can be caught on the locking jaws of the rear depressed portions of the effector affixing base and then the claw portion is engaged with the groove portion, even if a performer carries out a stepping operation with his/her toe and erroneously gives a kick to the effector, the effector cannot come off the separation member. As a result, changing the position of the effector and replacing the same can be easily carried out in accordance with the performer&#39;s request or a situation in a concert hall, and the effector operation can be also facilitated. 
         [0016]    In the effector affixing device according to the first invention, a third invention of the present invention is characterized in that the effector affixing base comprises a corner member constituted of the effector holding piece that supports each lower corner portion of the effector from three positions and the bottom plate, and it is divided into four pieces, the effector affixing device comprises corner position adjusting means for enabling to change a position of each corner member in a horizontal direction in such a manner that a dimension of the bottom surface is adapted to the corners of the effector in accordance with each different effector, the corner position adjusting means comprises two pairs of positional adjustment rails which are arranged so as to form a square as seen in a planar view, and the positional adjustment rails slidably connect the respective corner members near corner portions of the square. 
         [0017]    According to the third invention of the present invention, the respective divided corner members that affix the four lower corner portions of the effector are slidably connected to the position adjustment rails that extend in two directions, i.e., the horizontal and vertical directions and form respective pairs. When the corner members are slid along the position adjustment rails and positions of the corner members are changed, even though the effectors have different bottom surface dimensions, the effector affixing device associated with these dimensions can be provided. Further, even if the effector has a trapezoidal bottom surface shape, it is possible to cope with this shape by changing the lengths of the position adjustment rails. 
         [0018]    In the effector affixing device according to each of the first to third inventions, a fourth invention of the present invention is characterized in that each effector holding piece is erected from an edge portion of each corner portion of the bottom plate and divided into two directions at a corner portion thereof, and a buffer member is configured to be fitted between an inner side of each divided effector holding piece and an outer side of a side surface of the effector. 
         [0019]    According to the fourth invention of the present invention, each corner is divided into two directions, i.e., a long-side direction and a short-side direction of the effector, the buffer member made of an elastic body, e.g., a rubber ring can be easily fitted on each divided holding piece even in case of replacing to an effector whose bottom surface size is slightly different from that of the effector affixing portion formed of the corner members, and the effector can be affixed without backlash of the effector affixing base. 
         [0020]    In the effector affixing device according to each of the first to fourth inventions, a fifth invention of the present invention is characterized in that the effector affixing means comprises at least a pair of protrusions which are formed at both side edge portions of the effector affixing base so as to protrude downward, and a binder which abuts on an upper side and a lateral side of the effector mounted on the effector affixing base and holds the effector is configured to be attached to the protrusion by engagement. 
         [0021]    The effector may be affixed to the effector affixing base using, e.g., screws or an adhesive tape. However, according to the fifth invention of the present invention, since the pair of protrusions protruding downward below both the side edge portions are provided, a rubber band or a hair accessory called scrunchy can be wound around the pair of protrusions from above the effector in a state that the effector is mounted on the effector affixing base, thereby affixing the effector. As a result, the effector and the effector affixing base can be readily affixed or detached. 
         [0022]    In the effector affixing device according to each of the first to fifth inventions, a sixth invention of the present invention is characterized in that the front supports and the rear supports coupled with the effector affixing base have different heights, and the plate material and the bottom surface of the effector affixing base are coupled at a distance so as to tilt in a front-rear direction. 
         [0023]    According to the sixth invention of the present invention, since the front supports and the rear supports have different heights, the plate material of the effector board and the bottom surface of the effector affixing base are affixed so as to be tilted in the front-rear direction. As a result, the performance operation can be carried out while tilting the effector as the performer desires, and hence the operation of the wah pedal switch can be further facilitated. 
         [0024]    In the effector affixing device according to each of the first to sixth inventions, a seventh invention of the present invention is characterized in that the effector affixing device comprises a front tongue portion which bends and is upwardly concave on the front side thereof and also comprises lighting means for reflecting light on the front tongue portion and lighting a housing front surface of the effector with the light. 
         [0025]    At a time of giving a performance on the stage, a dark change may be carried out on the stage to enhance a stage illumination effect. In such a case, according to the seventh invention, even on the stage where the dark change is carried out, the front surface of the housing of the effector cannot be seen from the audience side in the concert hall by the lighting means, a performer can readily identify colors of the effector housing and a decorative string without interfering with the performance effect, and hence a different effector is not erroneously operated at the time of performance. 
       Advantageous Effects of Invention 
       [0026]    According to the first invention, the replacement of the effector can be facilitated. Further, the effector installation height can be easily changed. Since the shield lines and others can be accommodated in the separation space below the effector affixing base, and hence the wiring lines, e.g., the shield lines do not interfere with the switching operation using a toe. Even in case of arranging the effectors in two rows in the front-rear direction, since the rear effector can be placed at a higher position, the switch of the front effector is not operated by mistake at a time of operating the wah pedal switch of the rear effector. 
         [0027]    According to the second invention, the positional change or the replacement of the effector can be easily carried out in accordance with a request of the performer or a situation in the concert hall, and the effector operation can be also facilitated. 
         [0028]    According to the third invention, even if each effector has a different bottom surface dimension, the effector affixing device associated with this dimension can be provided. Furthermore, even if the effector has a trapezoidal bottom surface shape, it is possible to cope with this shape by changing the lengths of the position adjustment rails. 
         [0029]    According to the fourth invention, even in case of replacing to the effector having a bottom surface dimension slightly different from a bottom surface dimension of the effector affixing portion formed of each corner member, the effector can be affixed without backlash of the effector affixing base, and the replacement of the effector can be facilitated. 
         [0030]    According to the fifth invention, the effector and the effector affixing base can be readily affixed or taken off. 
         [0031]    According to the sixth invention, since the performance operation can be carried out so as to tilt the effector as the performer desires, the operation of the wah switch can be further facilitated. 
         [0032]    According to the seventh invention, since a color of the effector housing or a decorative string can be easily identified even on the stage where the dark change is carried out without disturbing the performance effect, a different effector is not erroneously operated at the time of performance. 
     
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         [0033]      FIG. 1  is a perspective view of an effector affixing device (Embodiment 1; 
           [0034]      FIG. 2  is a perspective view of the effector affixing device with an effector including a wah pedal being affixed (Embodiment 1); 
           [0035]      FIG. 3  is an explanatory view of a state that the effector is arranged on an effector board (Embodiment 1); 
           [0036]      FIG. 4  is a perspective view of an effector affixing base (Embodiment 1); 
           [0037]      FIG. 5  is a perspective view of a separation member (Embodiment 1); 
           [0038]      FIG. 6  is an explanatory view of a state that a decorative string is disposed to protrusions (Embodiment 1); 
           [0039]      FIG. 7  is a cross-sectional view (Embodiment 1); 
           [0040]      FIG. 8  is an explanatory view of an effector affixing device comprising a front tongue portion and lighting means (Embodiment 2); 
           [0041]      FIG. 9  is a side elevation of a state where a plurality of effectors are arranged in a front-rear direction (Embodiment 3); 
           [0042]      FIG. 10  is a perspective view of an effector affixing device (Embodiment 4); 
           [0043]      FIG. 11  is an explanatory view of a configuration for a corner portion of the effector affixing device (Embodiment 4); 
           [0044]      FIG. 12  is a perspective view showing a corner member from the lower side (Embodiment 4); 
           [0045]      FIG. 13  is a plan view (Embodiment 4); 
           [0046]      FIG. 14  is a bottom view (Embodiment 4); 
           [0047]      FIG. 15  is a cross-sectional view (Embodiment 4); 
           [0048]      FIG. 16  is a cross-sectional view (Embodiment 4); 
           [0049]      FIG. 17  is a perspective view of an effector affixing device (Embodiment 5); 
           [0050]      FIG. 18  is a plan view (Embodiment 5); 
           [0051]      FIG. 19  is a cross-sectional view (Embodiment 5); 
           [0052]      FIG. 20  is a cross-sectional view (Embodiment 5); and 
           [0053]      FIG. 21  is a cross-sectional view of an effector affixing device (Embodiment 6). 
       
    
    
     DESCRIPTION OF EMBODIMENTS 
     Embodiment 1 
       [0054]    Embodiment 1 according to the present invention will now be described hereinafter with reference to  FIG. 1  to  FIG. 7 .  FIG. 1  is a perspective view of an effector affixing device,  FIG. 2  is a perspective view of the effector affixing device in a state that an effector comprising a wah pedal is affixed,  FIG. 3  is an explanatory view of a state that the effector is arranged on an effector board,  FIG. 4  is a perspective view of an effector affixing base,  FIG. 5  is a perspective view of a separation member,  FIG. 6  is an explanatory view of a state that a decorative string is disposed to protrusions, and  FIG. 7  is cross-sectional views taken along a position A-A in  FIG. 1 . 
         [0055]    An outline of a configuration of an effector affixing device will now be described with reference to  FIG. 1 . In an effector affixing device  1  according to Embodiment 1, supports  210  and  220  formed on a separation member  200  are fitted in and coupled with depressed portions  130  and  140  formed in an effector affixing base  100 . Further, a separation space in which at least shield lines  2  can be arranged so as to intersect with each other is formed between the effector affixing base  100  and the separation member  200  (see  FIG. 3 ). The effector affixing base  100  can be separated by pulling and removing the supports  210  and  220  from the depressed portions  130  and  140 . Furthermore, the effector affixing device  1  is screwed and fixed to an effector board  300 , which is formed of a plate material, by using non-illustrated screws via holes  230  formed in the separation member  200 . 
         [0056]    An example of a state that an effector  400  is mounted on and affixed to the effector affixing device  1  will now be described with reference to  FIG. 2 . The effector is mounted on the effector affixing base  100  and affixed to the effector board  300 , which is formed of a plate material, through the separation member  200 . Further, the effector is affixed by holding both sides and an upper side thereof using a banding band  124  that is caught on protrusions  120  formed so as to protrude downward from both edges of the effector affixing base  100 . A plurality of shield line sockets  412  are provided on side surfaces of a housing of the effector, and non-illustrated shield line plugs are inserted into these sockets so that the effector is connected to other effectors. Furthermore, dial switches  411  and a wah pedal switch  410  operated using a toe are formed on the upper surface of the effector. 
         [0057]    An example of an installation state of each effector on the effector board will now be described with reference to FIG.  3 . Effectors ( 1   a ) each having a wah pedal switch formed thereto, other acoustic devices ( 1   b ), ( 1   c ), and ( 1   d ), and a level meter ( 1   e ) are connected to the effector board  300  through the shield lines  2 , and they are connected to a power supply device ( 1   f ) via power supply cords  3 . Since various kinds of devices are arranged in a space that allows a performer to use one foot for operations in this manner, each effector ( 1   a ) having the wah pedal switch formed thereto is arranged at a position near the acoustic devices ( 1   b ), ( 1   c ), and ( 1   d ) each having switches for adjusting acoustic effects formed thereon. Moreover, in conventional examples, a shield line having a length conforming to a predetermined standard connects each acoustic device, and its extra length portion is folded and accommodated between an acoustic device and an adjacently arranged acoustic device. 
         [0058]      FIG. 3  shows a state that an extra length portion of the shield line or the like is accommodated in the separation space between the effector affixing base  100  and the separation member  200  by applying the present invention. Here, it is preferable for a diameter of the shield line to be approximately 3 mm to approximately 10 mm and for a height that enables the shield lines to intersect with each other to be 10 mm to 20 mm. If this height is set to 15 mm, a thin shield line and a thick shield line can be arranged so as to intersect with each other. The height that enables the shield lines to intersect is selected in accordance with each shield line. This can be likewise applied to the following embodiments. 
         [0059]    The effector affixing base according to Embodiment 1 will now be described in detail with reference to  FIG. 4 . The effector affixing base  100  has a substantially rectangular shape, and it includes a bottom plate  101  adapted to a size of an effector bottom surface, effector holding pieces  110  erected from four corner portions, a pair of protrusions  120  that are formed at substantially central positions at both side edges portions of the bottom plate and protrude downward, a groove portion  102  that is formed on a front side (an upper right side in the drawing) of the bottom plate and concave upward, and depressed portions  130  and  140  that are formed near the respective corner portions of the bottom plate, opened on the lower side, and have a substantially cylindrical shape. A type of a material of the effector affixing base is not restricted as long as it is a flexible resin material. 
         [0060]    Each effector holding piece  110  is upwardly erected so as to surround each of the four corner portions of the bottom plate  101  from front, rear, left, and right directions in such a manner that the effector  400  is not displaced in the horizontal direction. A concave portion  103  that is inwardly dented is formed at a central position of the bottom plate on the rear side (an upper left side in the drawing). As a result, in a state that a plug bent portion of each shield line plug of a non-illustrated L-type connection terminal faces the lower side, the plug can be inserted into each shield line socket of the effector. 
         [0061]    Additionally, the pair of protrusions  120  are formed so as to protrude downward from both the left and right side edge portions of the bottom plate  101 . In Embodiment 1, each protrusion  120  has a substantially L-like shape as seen from the bottom surface, and it is constituted of a portion  122  that is parallel to the side edge direction below the side edge and a portion that extends toward the bottom plate from the end portion. A part between the portion  122  that is parallel to the side edge direction and the edge portion of the bottom plate  101  is opened, one end of the portion  122  functions as an open end, and an insertion hole  121  opened to the upper side and the lateral side is formed. 
         [0062]    Further, each notch portion  123  having a semicircular shape is formed at a position of the edge portion of the bottom plate  101  on the opposite side so as to sandwich the protrusion  120 . This notch portion  123  serves as a position where a string-like portion, e.g., a rubber band is accommodated when affixing the effector to the effector affixing base using the rubber band or the scrunchy. Both ends of the rubber band or the like are caught on the protrusions  120 , and the string-like portion is accommodated in the notch portions  123  and the insertion holes  121  so that the effector can be held without protruding from the effector affixing base toward the lateral sides. As a result, when the effector does not have to be firmly affixed, the effector can be very easily affixed. Further, when the effector is firmly affixed using the banding band and a shape or color of a decorative string  126 , e.g., the scrunchy caught on the protrusions as a clue to the identification of each effector is changed, a performer can readily discriminate the effector as an operation target from other effectors (see  FIG. 6 ). 
         [0063]    Furthermore, the groove portion  102  that is concave on the upper side is formed in the upper part of the front edge portion of the bottom plate  101 . In a head portion of a plate body  240  erected at a front end portion of a base plate, an end of a claw portion  241  formed toward the inner side is engaged with the groove portion  102  (see  FIG. 1  and  FIG. 5 ). The depressed portions  130  and  140  that are concave toward the lower side and have a short cylindrical shape are formed on the inner lower side near the four corner portions of the bottom plate  101 . A locking jaw  131  is formed on an inner peripheral wall rear side of the depressed portion  130  on the rear side, and an inner peripheral wall front side  133  is formed at a slant so as to widen an open end (see  FIG. 7 ). Moreover, a hole  132  is formed in the bottom plate  101  within the range where the locking jaw  131  is formed. 
         [0064]    Then, the separation member  200  according to Embodiment 1 will now be described with reference to  FIG. 5 . The separation member  200  is constituted of a substantially rectangular base plate  201  that is affixed to the effector board  300 , supports  210  and  220  erected to face each other at the positions below the depressed portions  130  and  140  formed on the effector affixing base near the corner portions of the base plate, the plate body  240  erected from the front edge portion of the base plate  201 , and holes  230  that enable to mount on the effector board  300  using screws. As a material of the base, like the effector affixing base, a flexible resin material can be used. 
         [0065]    Each support erected upward from the base plate  201  has a substantially cylindrical shape and, a height of all the supports, a height of the separation space between the effector affixing base  100  and the separation member  20  is set to 20 mm which is a height that enables the thick shield lines to intersect with each other. Each of the front supports  210  is constituted of a support formed by narrowing a support head portion  214 , and a reinforcing rib  215  is formed in the front-rear direction of a leg portion of this support. Each of the rear supports  220  is constituted of a support formed by narrowing a support head portion  224 , a jaw portion  222  is formed on the rear side of this head portion, a hole  4  having a shape associated with a planar shape of the jaw portion is formed in the base plate  201  at a position below the jaw portion  222 , and a reinforcing rib  216  is formed on the front side of a leg portion of each rear support  220 . 
         [0066]    Moreover, the flexible plate body  240  is erected on the front edge portion of the base plate  201 . The claw portion  241  that engages with the groove portion  102  in the effector affixing base is formed on the inner side below the head portion of the plate body  240 , and a finger placing portion  242  is formed on the outer side of this claw portion  241 . Since the plate body is made of a flexible material, when force is applied outward to the finger placing portion  242  and the fiber placing portion  242  is bent, the groove portion  102  and the claw portion  241  can be disengaged. 
         [0067]    A hole  243  having a shape associated with the planar shape of the claw portion  241  is formed in the base plate  201  within the range below a position at which the claw portion  241  is formed, and a hole  223  having a shape associated with the planar shape of each jaw portion  222  is formed in the base plate within the range below the jaw portion  222 . As a result, the separation member  200  having the jaw portions  222  and the claw portion  241  can be removed in the vertical direction from a molding die, and it can be molded in one process. 
         [0068]    Here, a coupling operation of the effector affixing base  100  and the separation member  200  will now be described with reference to  FIG. 7 .  FIG. 7  is cross-sectional views taken along a position A-A in  FIG. 1 .  FIG. 7  (A) shows a state that the effector affixing base  100  is separated from the separation member  200  in the vertical direction,  FIG. 7  (B) shows a state of a process for coupling the effector affixing base  100  with the separation member  200 , and  FIG. 7  (C) shows a state that the effector affixing base  100  is coupled with the separation member  200 . 
         [0069]    First, to dispose the effector affixing base  100  to the separation member  200 , in a state that the front side (an upper right side in the drawing) of the effector affixing base is raised and the bottom plate  101  is tilted in the front-rear direction, the depressed portions  130  on the rear side (an upper left side in the drawing) of the effector affixing base  100  are arranged to abut on the head portions of the pair of rear supports  220  formed on the base plate  100 . Additionally, the locking jaws  131  of the rear depressed portions  130  are meshed with the jaw portions  222  formed on the rear sides of the rear supports  220 , and then the front side of the effector affixing base is lowered. Subsequently, the depressed portions  140  on the front side of the effector affixing base are fitted on the head portions of the pair of front supports  210  of the separation member  200  while warping the head portion of the plate body  240  of the base toward the outside, the effector affixing base  100  is horizontalized, the head portion of the plate body  240  is returned to its original position, the claw portion  241  is fitted in the groove portion  102  formed in the front edge portion of the bottom plate of the effector affixing base, and the effector affixing base  100  is coupled with the separation member  200 . 
         [0070]    To detach the coupled effector affixing base  100  from the separation member  200 , the plate portion  240  is warped toward the outside, the claw portion  241  is removed from the groove portion  102 , the front side of the effector affixing base  100  is tilted so as to be uplifted with the head portions of the rear supports  220  being used as an axis, the locking jaws  131  are disengaged from the jaw portions  222 , and the effector affixing base  100  is removed from the separation member  200 . As a result, the effector affixing base can be readily separated from the base with small resistance. 
         [0071]    Here, a procedure of affixing the effector using the banding band will now be described (see  FIG. 4 ). First, the banding band  124  having bulge portions  125  formed at both end portions (see  FIG. 8 ) is inserted into respective opened side portions of the insertion holes  121  from the lateral sides of the insertion holes with one bulge portion  125  facing the downward direction. Additionally, the bulge portions  125  are displaced to the opened upper portions of the insertion holes  121 . In this manner, the bulge portions of the banding band  124  are caught on the portions of the portions parallel to the side edge direction and the edge portion of the bottom plate so that the banding band  124  cannot be removed, and one end portion of the banding band  124  is held in this state. 
         [0072]    Then, the banding band extending upward is rotated so as to surround and hold the left and right side portions and the upper portion of the effector, and the bulge portion at the other end of the banding band is inserted from the lateral side of the other insertion hole of the effector affixing base. Additionally, the bulge portion is displaced to the portion that is opened on the upper side, and the banding band  124  is fixed. Since the banding band made of a resin has poor stretch properties, the effector can be firmly affixed to the effector affixing base. To remove the effector from the effector affixing base, the bulge portion of the banding band on one side can be first displaced to the insertion hole and removed, and then the other banding band can be likewise removed. In Embodiment 1, although the banding band has been described as a banding instrument, a rubber band, a decorative string, or the like can substitute for the banding band. 
       Embodiment 2 
       [0073]    Embodiment 2 will now be described with reference to  FIG. 8 . In Embodiment 2, on the front side of the separation member  200  according to Embodiment 1, a front tongue portion  270  is extended so as to be concave upward, and a lighting device that causes reflection on the front tongue portion  270  and illuminates a front face of an effector  400  is provided. The lighting device is formed integrally with a light-emitting diode  510  and a power supply mechanism  500  which includes a power supply and a switch. The lighting device is disposed in a separation space between an effector affixing base  100  and the separation member  200  with a light-emitting side of the lighting-emitting diode  510  being provided on the front tongue portion  270  side. Further, light emitted from the light-emitting diode  510  is reflected on the front tongue portion  270  and applied to front faces  413  of an effector housing and a wah pedal. As a result, even if stage illumination is put out and a stage is subjected to a dark change, a performer can carry out a switch operation using his/her toe with a clue of a color of the wah pedal illuminated with the light from the light-emitting diode. 
         [0074]    A curvature of the front tongue portion that is formed so as to be concave upward is set to a curvature that allows the light applied toward the front side from the light-emitting diode to be reflected and applied to the front side and a nearby position of the effector housing and the wah pedal. Furthermore, the light emitting from the light-emitting diode is colorless light, and an upper face of the front tongue portion is white. As a result, the effector housing is illuminated in such a manner that the housing can be easily recognized by the performer but indistinctive from the audience. It is to be noted that the light-emitting portion of the light-emitting diode may be arranged so as to protrude from a front face of the effector affixing base. 
       Embodiment 3 
       [0075]    Embodiment 3 will now be described with reference to  FIG. 9 . In regard to a separation member  200  according to Embodiment  3 , front and rear supports  250  and  260  have different heights. In Embodiment 3, configurations of the front and rear supports are the same except that these supports have different heights from those of the supports according to Embodiment 1, a configuration of an effector affixing base is the same as that according to Embodiment 1, and hence a description thereof will be omitted. It is possible to select the front or rear supports as a target of increase in height in accordance with a performer&#39;s request. 
         [0076]    Moreover, a height of a separation space between the effector affixing base  100  on the support side with a small height arranged on the front or rear side and a separation member  200  is a height that enables shield lines to intersect with each other, and the height of the lower supports on the front side is set to 20 mm in Embodiment 3. Additionally, a configuration of the effector affixing base, a coupling operation of the effector affixing base and the separation member, affixing and removing operations of an effector using a banding band, and protrusions for catching a decorative string are equal to those in Embodiment 1, and hence a description therefore will be omitted. 
         [0077]    Further, when a rear effector ( 400   b ) is affixed to an effector affixing device  1  with respect to a front effector ( 400   a ) directly affixed to an effector board  300 , the rear effector ( 400   b ) can be placed at a high position, and a rear wah pedal switch  410  can be operated with a toe  414  without being obstructed by a dial switch  411  or the like of the front effector even though the rear effector ( 400   b ) has the wah pedal switch  410 . 
       Embodiment 4 
       [0078]    Embodiment 4 according to the present invention will now be described with reference to  FIG. 10  to  FIG. 16 .  FIG. 10  is a perspective view of an effector affixing device  4  according to Embodiment 4,  FIG. 11  is an explanatory view of a configuration of a corner portion of the effector affixing device,  FIG. 12  is a perspective view showing a corner member from the lower side,  FIG. 13  is a plan view,  FIG. 14  is a bottom view,  FIG. 15  is a cross-sectional view taken along a position A-A in  FIG. 13 , and  FIG. 16  is a cross-sectional view taken along a position B-B in  FIG. 13 . In the effector affixing device  4  according to Embodiment 4, an effector affixing base is divided into corner members  610  configured to affix four lower corner portions of an effector and two side edge members  620  configured to affix side edges of the effectors. Separation members  630  and  640  are disposed to the lower sides of the corner members  610  and the side edge members  620  in accordance with respective members. An elongated positional adjustment rail  660  is disposed to the lower side of each separation member  630  below each corner member  610  along the longitudinal direction of each effector, and a shorter positional adjustment rail  650  is disposed along a short side direction of each effector. 
         [0079]    Each effector whose bottom surface has a vertical dimension of approximately 90 to approximately 180 mm and a horizontal dimension of approximately 40 mm to approximately 150 mm is circulated, and many kinds of effectors are circulated. In Embodiment 4, each of the positional adjustment rails  650  and  660  has a rectangular cross-sectional shape so as to be adapted to bottom surfaces of effectors having different sizes, and the rails are selected from those having a plurality of types of lengths. The shorter positional adjustment rail  650  is used in the short side direction of each effector, and the elongated positional adjustment rail  660  is used in the long side direction of each effector. Slotted holes  651  for screw insertion are formed in the shorter positional adjustment rail  650  in the vicinity of both ends thereof (see  FIG. 14 ). Slotted holes  661  for screw insertion are formed in the elongated positional adjustment rail  660  in the vicinity of both ends thereof and at a substantially central part. The elongated positional adjustment rail and the shorter positional adjustment rail are arranged to form a substantially rectangular shaped as seen in a plane. Step portions  652  and  662  are formed at the slotted holes of the positional adjustment rail, a head portion of each screw  670  is caught ( FIG. 15  and  FIG. 16 ), and it is possible to cope with an effector having a different bottom surface size by sliding positions of the corner members or the side edge members within the range of a length of a diameter of the slotted hole. 
         [0080]    Each corner member  610  has a substantially rectangular shape, and concave portions  611  and  612  associated with a cross-sectional dimension of each positional adjustment rail are formed in the short-side direction and the long-side direction on the bottom portion thereof (see  FIG. 12 ). Further, screws  670  inserted into the slotted holes  651  and  661  in the shorter positional adjustment rail  650  and the elongated positional adjustment rail  660  are screwed to nuts  671  embedded in nut embedding holes provided in a top portion of the corner member  610  (see  FIG. 11 ). An effector holding piece  680  erected from the corner portion of each corner member  610  has a notched corner portion, and the effector holding piece  680  is divided into a holding piece  681  in the short-side direction and a holding piece  682  in the long-side direction (see  FIG. 10 ). 
         [0081]    In a state that an effector is mounted on the effector holding base, a buffer member formed of an elastic body that fills a gap between the effector and the effector holding pieces  681  and  682 , e.g., a rubber ring  672  (see  FIG. 10 ) is fitted on the divided holding pieces  681  and  682 , and the effector is thereby affixed without backlash. Furthermore, a protrusion  683  is formed on the lower side of the corner member  610  on the outer edge side in the short-side direction so as to face downward (see  FIG. 12 ). A string-like body such as a rubber band or a scrunchy that holds the upper side and the lateral side of the effector with the effector mounted on the effector affixing base binds the protrusion  683 , thereby affixing the effector. An outer edge portion of a bottom plate  684  of the corner member  610  protrudes toward the lateral side, and a reinforcing piece  685  is suspended from the protruding portion in the vicinity of the corner. 
         [0082]    Each side edge member  620  has a substantially rectangular shape, and a concave portion associated with the cross-sectional dimension of the positional adjustment rail is formed in the long-side direction on the bottom portion. Furthermore, the screw  670  inserted into the slotted hole  661  of the elongated positional adjustment rail  660  is screwed to the nut  671  embedded in a nut embedding hole provided in the upper portion of the side edge member  620 . Each effector holding piece  691  erected from the side edge portion of the side edge member  620  is divided into two pieces in the long-side direction. Moreover, a protrusion  693  is formed on the edge side of the side edge member  620  to protrude downward, and an outer edge portion of a bottom plate  694  protrudes, and a reinforcing piece  695  is formed at an end portion of the protruding portion. These points and functions of these members are equal to those of the corner member. 
         [0083]    As the separation members, each corner separation member  630  is disposed below each corner member, and each side edge separation member  640  is disposed below each side edge member. In the top portion of each corner separation member, a convex portion  613  that is fitted in accordance with the shorter positional adjustment rail concave portion  611  of the corner member and a convex portion  614  that is fitted in accordance with the long-side rail concave portion  612  are formed (see  FIG. 11 ). Additionally, in the bottom portion of the corner separation member  630 , concave portions  631  and  632  that coincide with shapes of the concave portions  611  and  612  in the bottom portion of the corner member are formed (see  FIG. 11  and  FIG. 12 ). Further, each reinforcing piece  686  that supports the lower side of the reinforcing piece  685  of the corner member and reaches to the effector board is provided (see  FIG. 10 ). Furthermore, each corner separation member  630  is arranged between the corner member  610  and the positional adjustment rails  650  and  660 , the screws  670  inserted from the lower side of the slotted holes  651  and  661  of the positional adjustment rails are inserted into the screw holes of the separation member  630  and screwed to the nuts  671  embedded in the top portion of the corner member, thereby forming the corner of the effector affixing base (see  FIG. 11 ). Moreover, when the separation member having a desired height is selected from separation members having a plurality of types of heights, the effector affixing base is formed into an affixing base having a height desired by a performer. 
         [0084]    In the bottom portion of side edge separation member  640 , like the side edge member  620 , a concave portion associated with the cross-sectional dimension of the positional adjustment rail is formed along the long-side direction. Further, on the top portion of each side edge separation member, a convex portion that is fitted in the long-side rail concave portion of the side edge member in association with each other is formed. Furthermore, a reinforcing piece  696  that supports the lower side of the reinforcing piece  695  of the side edge member and reaches the effector board is provided. Moreover, the side edge separation member  640  is arranged between the side edge member  620  and the elongated positional adjustment rail  660 , and a screw inserted from the lower side of the slotted hole of the elongated positional adjustment rail is inserted into a screw hole of the side edge separation member  640 , and screwed to a nut embedded in the top portion of the side edge member, thereby forming a side edge support portion of the effector affixing base. Additionally, when each side edge separation member  640  having the same height as each corner separation member  630  is selected, the effector affixing base is formed as an affixing base having a height desired by a performer. Further, the effector affixing device according to this embodiment can be likewise adapted to an effector having, e.g., a trapezoidal shape according to a footprint by forming the shorter positional adjustment rail to be long on the rear side and short on the front side. As a result, many various kinds of effectors can be affixed. 
         [0085]    In the effector affixing device  4  according to this embodiment, each corner member  610  is arranged to overlap each corner separation member  630 , each side edge member  620  is arranged to overlap each side edge separation member  640 , and the elongated positional adjustment rail  660  and the shorter positional adjustment rail  650  connect the lower sides of these members and are arranged to form a substantially square plane. Further, a position of the effector holding piece  680  at each corner portion of the corner member  610  is substantially matched with a size of the bottom surface of the effector to be mounted, and the screws  670  are inserted from the lower side into the screw holes  651  and  661  provided in the member and then screwed, thereby temporarily affixing the effector. Then, the positions of each corner member  610  and each side edge member  620  are adjusted so that the size of the bottom surface of the effector affixing base coincides with the size of the bottom surface of the effector, and the screws  670  freely fitted in the slotted holes  651  and  661  of the positional adjustment rails  650  and  660  are fastened, and the effector affixing device is thereby assembled. 
         [0086]    Moreover, in case of affixing an effector having a bottom surface whose size is slightly smaller than a size of the bottom surface of assembled effector affixing base, the rubber ring  672  can be disposed to the divided holding pieces  681  and  682 , and a gap between the effector and the effector affixing base is filled, whereby backlash is avoided. As a result, even in case of disposing and affixing an effector having a bottom surface whose size is slightly smaller to the previously assembled effector affixing device  4 , it is not necessary to adjust positions of the effector and the effector affixing base by using a buffer member, e.g., the rubber ring  672  and again assemble the effector. As a result, there may be obtained an advantageous effect that the rapid replacement of the effector can be facilitated even in a concert hall. It is to be noted that a material having elasticity can suffice as the buffer member, and a material and a shape are not restricted. For example, if a hole is formed in the top portion of the holding piece, the buffer member may be formed into a shape having a shaft portion on the lower side and a bulge portion on the effector side, the shaft portion may be inserted into the hole, and the bulge portion may be arranged to abut on the effector, thereby avoiding the backlash. 
         [0087]    The assembled effector affixing device may be easily affixed on the effector board using a hook-and-loop fastener or a double sided tape, or it may be firmly affixed by screwing and the like. Furthermore, in a state that the effector is affixed, a space with a height that allows shield lines to intersect with each other is assured between the effector bottom surface and the coupling rails  650  and  660 . In regard to the affixing device according to Embodiment 4, its members are overlapped and configured, and then the accurate and stable effector affixing device is assembled in accordance with a size of the effector bottom portion. Further, when the buffer member, e.g., the rubber ring  672  is fitted in the divided erected pieces  681  and  682 , even an effector having a slightly different bottom surface size can be mounted without backlash. Furthermore, adjusting the positions of the screws in the slotted holes of the positional adjustment rails enables to affix many various effectors having different sizes. 
       Embodiment 5 
       [0088]    Embodiment 5 according to the present invention will now be described with reference to  FIG. 17  to  FIG. 20 .  FIG. 17  is a perspective view of an effector affixing device  5  according to Embodiment 5,  FIG. 18  is a plan view,  FIG. 19  is a cross-sectional end elevation taken along a position A-A in  FIG. 18 , and  FIG. 20  is a cross-sectional view taken along a position B-B in  FIG. 18 . In the effector affixing device  5  according to Embodiment 5, an effector affixing base is divided into four corner members  710  that affix lower corner portions of an effector and two side edge members  720  that affix side edges of the effector. Separation members  730  and  740  are disposed to the lower sides of the corner members  710  and the side edge members  720  in accordance with respective members. In Embodiment 5, as different from Embodiment 4, elongated positional adjustment rails  760  are disposed to top portions of the corner members  710  and the side edge members  720  along a long-side direction of the effector, and shorter positional adjustment rails  750  are disposed along a short-side direction of the effector. 
         [0089]    A cross-sectional shape of each positional adjustment rail is a substantially rectangular shape like Embodiment 4. Screw insertion slotted holes  751  and  761  are opened in the positional adjustment rails along the vertical direction. The screw insertion slotted holes  751  are formed in the vicinity of both ends of each shorter positional adjustment rail  750 . The screw insertion slotted holes  761  are formed in the vicinity of both ends and at a substantially central portion of each elongated positional adjustment rail  760 . slotted holes  752  and  762  are formed in the slotted holes, and a nut  771  is caught on each step portion (see  FIG. 18  and  FIG. 20 ). 
         [0090]    Each corner member  710  has a substantially rectangular shape, and concave portions  711  and  712  each having a width associated with a cross-sectional dimension of the position adjustment rail are formed in a top portion of this corner member  710  along the short-side direction and the long-side direction ( FIG. 19 ). Moreover, the nuts  771  are slidably attached to the step portions  752  and  762  of the slotted holes in the top portions of the shorter positional adjustment rail and the elongated positional adjustment rail. Additionally, each screw  770  pierces through and is inserted into the corner member and the separation member from the lower side, and it is screwed with a screw head being accommodated in a concave portion formed as a screw head accommodating portion in the bottom portion of the corner member  710 . As different from Embodiment 4, in case of Embodiment 5, the screw head accommodating portion is also formed in the bottom portion of the corner member  710  (see  FIG. 20 ). As a result, in case that a low installation height of the bottom surface of the effector affixing device can suffice, the effector affixing device can be assembled without using the separation member as described above. On the other hand, in case of assuring the separation space having a height that allows the intersection of shield lines between each positional adjustment rail and the effector board by using the separation member, the corner members  710  and the side edge members  720  are arranged to overlap below the positional adjustment rails, and the separation members  730  and  740  are further arranged to overlap below these members. Further, the screws  770  are inserted from the lower side and screwed to the nuts  771  attached to the top portions of the positional adjustment rails, whereby the effector affixing device is assembled. Here, each separation member  730  serves as a support that supports the effector affixing base. 
         [0091]    A corner of an effector holding piece  800  erected from a corner portion of each corner member  710  is notched, and the effector holding piece is the same as that in Embodiment 4 in that the effector holding piece is divided into a holding piece  801  in the short-side direction and a holding piece  802  in the long-side direction, that a protrusion  803  is formed on a lower portion of the corner member on the outer edge side in the short-side direction to protrude downward, that an outer edge portion of a bottom plate  804  of the corner member bulges toward the lateral side, that a reinforcing piece  805  is erected near the corner of the bottom plate  804 , and also in functions and effects, and hence a description on these points will be omitted in Embodiment 5. It is to be noted that the number of the reinforcing pieces may be changed and applied as a matter of course. 
         [0092]    Each side edge member  720  also has a substantially rectangular shape, and a concave portion associated with the cross-sectional dimension of the positional adjustment rail is formed in a top portion of the side edge member  720  along the long-side direction. Furthermore, the screw  770  is inserted from the lower side into the nut  771  slidably attached to a step portion  761  in the slotted hole of the elongated positional adjustment rail through the side edge member  720  and the separation member  740  with a screw head being accommodated in a concave portion serving as a screw head accommodating portion in the bottom portion of the separation member  740  (see  FIG. 20 ). Like the corner member  710 , a screw head accommodating portion is formed in a bottom portion of the side edge member  720 , and the effector affixing device can be assembled without using the separation member when a small installation height of the bottom surface of the effector affixing device is allowed. 
         [0093]    An effector holding piece  811  erected from the side edge portion of each side edge member is divided into two pieces along the side edge. Additionally, a protrusion  814  is formed on the lateral side of the side edge member so as to protrude downward, an outer edge portion of the bottom plate is protruded, and a reinforcing piece  815  is formed at an end of the protruded portion. These points and functions of these members are equal to those of the corner member. A screw head accommodating portion is likewise formed in a bottom portion of each separation member  740  below the side edge member, and the effector affixing device is assembled so as to adjust a height of the effector affixing device like the separation member of the corner member (see  FIG. 20 ). 
         [0094]    A shape of the top portion of each of the separation members  730  and  740  is different from that in Embodiment 4. The corner separation member  730  is disposed to the lower side of the corner member  710 , the side edge separation member  740  is disposed to the lower side of the side edge member  720 , the top portion of the corner separation member can be substantially matched with the shape of the bottom surface of the corner member, and the top portion of the side edge separation member can be likewise substantially matched with the shape of the bottom surface of the side edge member. Furthermore, reinforcing pieces  806  and  816  that support the lower sides of the reinforcing pieces  805  and  815  formed on the edge portions of the protruded portions of the corner members and the side edge members and reach an effector board are provided on the side edges of the separation members. Further, in Embodiment 5, likewise, screws are inserted from the lower side and screwed to the nuts fixed on the positional adjustment rails, thereby affixing the effector affixing device. 
         [0095]    In the effector affixing device according to Embodiment 5, likewise, before mounting an effector, the effector affixing device is temporarily assembled so as to be substantially matched with the size of the effector bottom surface, the screws are fastened while matching the positions of the corner members of the effector affixing device with the bottom surface of the effector, and the buffer member formed of the rubber ring is fitted with respect to the divided erected pieces (see  FIG. 10 ). The effector affixing device according to Embodiment 5 can be easily assembled by vertically overlapping the respective members constituting this device, and fitting the rubber band enables to hold the effector stably on the effector affixing device. 
         [0096]    Furthermore, the point that the effector affixing base is formed as an affixing base having a height desired by a performer when the separation member having a desired height is selected from separation members having a plurality of types of heights and then used is also the same as Embodiment 4. It is to be noted that, in case of replacing the effector with an effector whose bottom surface size is slightly smaller, a thickness and a size of the rubber ring can be changed to cope with this substitution. In Embodiment 5, the effector is affixed to the effector affixing device, then wiring lines such as shield lines are arranged along the effector board, the effector affixing device can be installed on the effector board using a hook-and-loop fastener or the like, and hence the installation of the effector affixing device is further facilitated. 
       Embodiment 6 
       [0097]    Although each of Embodiment 4 and Embodiment 5 comprises erected pieces obtained by dividing the effector holding piece at each corner member along the long-side direction and the short-side direction, the effector holding piece in Embodiment 5 is changed and an effector affixing device conforming to a size of a bottom surface of an effector is provided without dividing an effector holding piece  900  in Embodiment 6 shown in  FIG. 21 . Even in a state that the effector is kept being affixed to the effector affixing device without changing the effector, since a separation space in which shield lines intersect with each other is provided below a bottom plate of an effector affixing base, wiring lines, e.g., the shield lines are organized in this Embodiment 6, thereby facilitating operations of the effector. 
       Other Embodiments 
       [0098]    The front and rear separation members may have different heights, the effector affixing base and the effector board may be tilted, and the separation space may include lighting means. 
         [0099]    The effector holding piece of the effector affixing device integrated with the effector affixing base may be divided in two directions as a matter of course. 
         [0100]    Although the lighting means is attached to the separation member in Embodiment 2, this means may be attached to any one of the effector affixing base, the corner member, the separation member, and the positional adjustment rail, this configuration can be applied to an effector affixing device in which an effector affixing base is divided and which is integrated with positional adjustment rails besides the effector affixing device integrated with the bottom plate, and providing a front tongue portion that is bent to be concave upward on the front side of the effector affixing device can suffice. 
         [0101]    Although the effector affixing device is divided into the four corner members and the two side edge members in each of Embodiment 4 and Embodiment 5, the division number is not restricted, and dividing the effector affixing device into at least four corner members can suffice. 
         [0102]    Although the four supports are formed on the separation member in each of Embodiment 1 to Embodiment 3, the separation member may be divided into left and right pieces or front and rear pieces to form two supports, and the divided separation members may be combined and coupled with the effector affixing base. 
         [0103]    Embodiments disclosed herein are all illustrative examples, and it can be considered that they are not restrictive. The technical scope of the present invention is not restricted to the above explanation, it is shown by claims, and meaning equivalent to claims and all modifications of claims are intended to be included. 
       REFERENCE SIGNS LIST 
       [0104]      1 ,  4 ,  5  . . . an effector affixing device,  100  . . . an effector affixing base,  200  . . . a separation member,  300  . . . an effector board,  400  . . . an effector,  500  . . . a power supply mechanism,  510  . . . a light-emitting diode,  110  . . . effector holding pieces,  120  . . . protrusions,  130 ,  140  . . . depressed portions,  210  . . . front supports,  220  . . . rear supports,  230  . . . holes,  240  . . . a plate body,  250  . . . front supports,  260  . . . rear supports,  270  . . . a front tongue portion,  410  . . . a wah pedal switch,  101  . . . a bottom plate,  102  . . . a groove portion,  103  . . . a concave portion,  121  . . . an insertion hole,  122  . . . a portion that is parallel to the side edge direction,  123  . . . a notch portion,  124  . . . a banding band,  125  . . . a bulge portions,  126  . . . a decorative string,  131  . . . a locking jaw,  132  . . . a hole,  133  . . . an inner peripheral wall front side,  201  . . . a base plate,  215 ,  216  . . . a reinforcing rib,  222  . . . a jaw portion,  223  . . . a hole,  214 ,  224  . . . a support head portion,  241  . . . a claw portion,  242  . . . a finger placing portion,  243  . . . a hole,  411  . . . a dial switch,  412  . . . shield line sockets,  413  . . . front faces of an effector housing and a wah pedal,  414  . . . a toe,  1   a  . . . an effector having the wah pedal switch,  1   b ,  1   c ,  1   d  . . . other acoustic devices,  1   e  . . . a level meter,  1   f  . . . a power supply device,  2  . . . shield lines,  3  . . . power supply cords,  400   a  . . . a front effector,  400   b  . . . a rear effector, 
         [0105]      610  . . . a corner member,  611 ,  612  . . . a concave portion,  613 ,  614  . . . a convex portion,  620  . . . a side edge member,  630 ,  640  . . . a separation member,  631 ,  632  . . . a concave portion,  650  . . . a positional adjustment rail,  660  . . . a positional adjustment rail,  651 ,  661  . . . a slotted hole,  652 ,  662  . . . a step portion,  670  . . . a screw,  671  . . . a nut,  680 ,  681 ,  682 ,  691  . . . an effector holding piece,  683 ,  693  . . . a protrusion,  685 ,  686 ,  695 ,  696  . . . a reinforcing piece,  672  . . . a rubber ring,  684 ,  694  . . . a bottom plate,  710  . . . a corner member,  720  . . . a side edge member,  730 ,  740  . . . a separation members,  750  . . . a shorter positional adjustment rail,  760  . . . an elongated positional adjustment rail, 
         [0106]      711 ,  712  . . . a concave portion,  751 ,  761  . . . a slotted hole,  752 ,  762  . . . a slotted hole,  770  . . . a screw,  771  . . . a nut,  800 ,  801 ,  802 ,  811 ,  900  . . . an effector holding piece,  803 ,  814  . . . a protrusion,  804  . . . a bottom plate,  805 ,  806 ,  815 ,  816  . . . a reinforcing piece