Patent Publication Number: US-10789916-B1

Title: Snare drum

Description:
BACKGROUND 
     1. Field 
     The present invention relates to a snare drum. 
     2. Description of Related Art 
     The snare drum includes a shell, a pair of drum heads (a batter head and a bottom head), a snare wire, a strainer, a butt, and the like. The snare wire is fixed to the strainer and the butt with a cord or a strap so as to be attached along the bottom head. In this state, if the strainer is operated, the snare wire is switched to an on position in contact with the bottom head or an off position away from the bottom head. Further, in a state where the snare wire is switched to the on position, if an adjusting screw provided on the strainer or the butt is operated, both ends of the snare wire are pulled to adjust tension of the snare wire. A user checks sound by hitting the batter head while operating the adjusting screw to adjust tension of the snare wire so as to tune the snare drum. 
     Several snare drums having a plurality of tension adjusting devices as means for adjusting tension of a snare wire have been proposed. For example, a snare drum  100  disclosed in  FIG. 10  is configured to be able to separately adjust tension of inner sound wires  101   a  of a snare wire and tension of outer sound wires  101   b  located on both outer sides of the inner sound wires  101   a . Therefore, an adjusting screw  103   a  for adjusting tension of the inner sound wires  101   a  and an adjusting screw  103   b  for adjusting tension of the outer sound wires  101   b  are assembled to the strainer  102  so as to be adjacent to each other. 
     In the case of a snare drum  110  disclosed in  FIG. 11 , three adjustment mechanisms  113   a ,  113   b ,  113   c  for adjusting tension of a snare wire is assembled side by side to a strainer  112 . Inner sound wires  111   a  are connected to the adjustment mechanism  113   a  on the center through a cord  114 . First outer sound wires  111   b  are connected to the adjustment mechanism  113   b  on the left. Second outer sound wires  111   c  thicker than the first outer sound wires  111   b  are connected to the adjustment mechanism  113   c  on the right. 
     In addition, each of the snare drums disclosed in U.S. Pat. Nos. 5,275,081 and 5,844,157 includes a snare wire assembly configured so as to be able to separately adjust tension of the entire snare wire and tension of inner sound wires of the snare wire. In the case of U.S. Pat. No. 5,275,081, a fastener is fixed to each of both ends of inner sound wires, and a cable is hooked on the fastener. In addition, at each end section of the snare wire assembly, a first block connected to the lower section of a strainer through a cord, a second block fixed to the first block, and a plate fixed to the second block are provided. Outer sound wires of the snare wire are fixed between the first and second blocks by a pair of bolts. The inner sound wires are fixed between the second block and the plate by one bolt through a cable. 
     In the case of U.S. Pat. No. 5,844,157, an end fitting body fixed to a lower section of a strainer or a butt through a strap is provided at each of both end sections of the snare wire assembly. In addition, a moving member is movably supported by one of the both end fitting bodies through a bolt and a nut. Both ends of the outer sound wires are fixed to the both end fitting bodies, respectively. One of both ends of the inner sound wires is fixed to the end fitting body, and the other ends of the inner sound wires are fixed to the moving member. 
     In the cases of the snare drums  100 ,  110  disclosed in  FIGS. 10 and 11 , the plurality of tension adjustment mechanisms is provided on the strainers  102 ,  112 . Therefore, the strainers  82 ,  92  not only require more components but also configurations near the strainers  82 ,  92  are complicated. In addition, configurations disclosed in  FIGS. 10 and 11  can be applied only to the dedicated snare drums  100 ,  110 , and cannot be applied to a general-purpose snare drum having only one tension adjusting device on a strainer. In contrast, the snare wire assemblies disclosed in U.S. Pat. Nos. 5,275,081 and 5,844,157 can also be applied to a general-purpose snare drum. 
     In the case of U.S. Pat. No. 5,275,081, tension of both the outer sound wires and the inner sound wires can be adjusted by operating an adjusting screw provided on the strainer. However, in the case of only adjusting tension of the inner sound wires without changing the tension of the outer sound wires, in order to adjust the length between the fastener and the plate, troublesome work such as loosening or pulling the cord is required in addition to loosening or tightening the bolt for fixing the second block and the plate. In addition, in the case of U.S. Pat. No. 5,844,157, the moving member that is operated when tension of the inner sound wires is adjusted is disposed on a bottom head. Therefore, since it is difficult to operate the moving member in a state where a batter head is directed upward, tension of the inner sound wires cannot be adjusted well. In addition, since the bolt is small, it is necessary to loosen or tighten the bolt with a screwdriver, and it takes time and effort to operate the moving member. Therefore, in the configurations disclosed in both U.S. Pat. Nos. 5,275,081 and 5,844,157, it is not easy to adjust tension of the snare wire while checking sound by hitting the batter head. 
     SUMMARY 
     This Summary is provided to introduce a selection of concepts in a simplified form that are further described below in the Detailed Description. This Summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter. 
     In one general aspect, a snare drum is provided. The snare drum includes a shell having a cylindrical shape, a pair of drum heads that are mounted on upper and lower opening ends of the shell through hoops, a snare wire that is attached along the drum head mounted on the lower opening end of the shell and includes a sound wire, a retainer that is provided on an outer peripheral surface of the shell and to which both ends of the snare wire are fixed, and a tension adjusting device that is attached to at least one of the shell, the hoop, the snare wire, and the retainer and adjusts tension of the snare wire. The tension adjusting device is configured to adjust the tension of the snare wire by displacing the sound wire in a direction intersecting the sound wire. 
     In another general aspect, a snare drum is provided. The snare drum includes a shell having a cylindrical shape, a pair of drum heads that are mounted on upper and lower opening ends of the shell through hoops, a snare wire that is attached along that is the drum head mounted on the lower opening end of the shell and includes a sound wire section that is configured of a plurality of sound wires, and a pair of end fixtures that is fixed to both ends of the sound wire section, and a retainer that is provided on an outer peripheral surface of the shell and to which end sections of the snare wire are fixed. The snare wire is attached along the drum head mounted on the lower opening end of the shell by directly fixing the pair of end fixtures to the retainer. 
     Other features and aspects will be apparent from the following detailed description, the drawings, and the claims. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a perspective view of a snare drum according to an embodiment of the present invention; 
         FIG. 2  is a perspective view of a snare wire; 
         FIG. 3  is a perspective view of a strainer and a tension adjusting device; 
         FIG. 4  is an exploded perspective view of the tension adjusting device; 
         FIG. 5  is a partial cross-sectional view near the tension adjusting device of the snare drum; 
         FIG. 6  is a perspective view of a snare wire according to another example; 
         FIG. 7  is a perspective view of a tension adjusting device according to another example; 
         FIG. 8  is a schematic cross-sectional view of a tension adjusting device according to another example; 
         FIG. 9  is a schematic cross-sectional view of a tension adjusting device according to another example; 
         FIG. 10  is a perspective view of a conventional tension adjusting device; and 
         FIG. 11  is a perspective view of a conventional tension adjusting device. 
     
    
    
     Throughout the drawings and the detailed description, the same reference numerals refer to the same elements. The drawings may not be to scale, and the relative size, proportions, and depiction of elements in the drawings may be exaggerated for clarity, illustration, and convenience. 
     DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS 
     This description provides a comprehensive understanding of the methods, apparatuses, and/or systems described. Modifications and equivalents of the methods, apparatuses, and/or systems described are apparent to one of ordinary skill in the art. Sequences of operations are exemplary, and may be changed as apparent to one of ordinary skill in the art, with the exception of operations necessarily occurring in a certain order. Descriptions of functions and constructions that are well known to one of ordinary skill in the art may be omitted. 
     Exemplary embodiments may have different forms, and are not limited to the examples described. However, the examples described are thorough and complete, and convey the full scope of the disclosure to one of ordinary skill in the art. 
     Hereinafter, an embodiment embodying a snare drum  10  of the present invention will be described with reference to  FIGS. 1 to 5 . 
     As illustrated in  FIG. 1 , the snare drum  10  includes a shell  11  having a cylindrical shape, a pair of drum heads, a snare wire  12 , a strainer  13 , and a butt, not illustrated. The drum head functions as a batter head by being mounted on the upper opening end of the shell  11  together with an upper hoop  15 . The drum head functions as a bottom head  17  by being mounted on the lower opening end of the shell  11  together with a lower hoop  16 . The strainer  13  and the butt function as a retainer to which both ends of the snare wire  12  are fixed when the snare wire  12  is attached along the bottom head  17 .  FIG. 1  illustrates the snare drum  10  with the bottom head  17  directed downward. 
     The snare drum  10  includes first tension bolts  18   a  and first lugs  18   b  to which the first tension bolts  18   a  are screwed. The first tension bolt  18   a  fixes the upper hoop  15  and the batter head at the upper opening end of the shell  11 . The snare drum  10  includes second tension bolts  19   a  and second lugs  19   b  to which the second tension bolts  19   a  are screwed. The second tension bolt  19   a  fixes the lower hoop  16  and the bottom head  17  to the lower opening end of the shell  11 . The first and second lugs  18   b ,  19   b  are disposed so as to make a pair in the vertical direction. The strainer  13  is fixed to the outer peripheral surface of the shell  11  avoiding the first and second lugs  18   b ,  19   b . The butt is fixed to the outer peripheral surface of the shell  11  located on the side opposite to the strainer  13 . 
     The first and second lugs  18   b ,  19   b  are disposed at equiangular intervals around the central axis of the shell  11 . By tightening or loosening the first tension bolt  18   a  inserted into a screw hole of the first lug  18   b , the fitting amount of the upper hoop  15  into the shell  11  is changed. Thus, tension of the batter head is changed. Similarly to the above, by tightening or loosening the second tension bolt  19   a  inserted into a screw hole of the second lug  19   b , the fitting amount of the lower hoop  16  into the shell  11  is changed. Thus, tension of the bottom head  17  is changed. 
     The snare drum  10  includes a tension adjustment mechanism  30  and a tension adjusting device  40  as means for adjusting tension of the snare wire  12 . The tension adjustment mechanism  30  is provided to adjust tension of the entire snare wire  12 . The tension adjustment mechanism  30  includes, as an operating unit, an adjusting screw  30   a  provided on an upper section of the strainer  13 . The tension adjusting device  40  is provided to adjust tension of the central portion of the snare wire  12 . The tension adjusting device  40  includes, as an operating unit, an adjusting screw  43  provided on a lower section of the strainer  13 . In a state where the tension adjusting device  40  is attached to the strainer  13 , a head section of the adjusting screw  43  is disposed between the lower hoop  16  and the strainer  13 . 
     As illustrated in  FIG. 2 , the snare wire  12  includes a sound wire section  21  configured of a plurality of sound wires, and a pair of end fixtures  22  fixed to both ends of the sound wire section  21 . The sound wire section  21  includes inner sound wires  23  located at the center of the sound wire section  21 , and outer sound wires  24  located on both outer sides of the inner sound wires  23 . Each of the inner sound wires  23  and the outer sound wires  24  is made of a straight wire. Since the inner sound wire  23  is made of a type of straight wire different from the outer sound wire  24 , the inner sound wire  23  emits vibration sound different from that of the outer sound wire  24 . 
     The end fixtures  22  are fixed to both end sections of the sound wire section  21  by a joining method such as soldering, welding, or adhesion. The end fixture  22  is formed by bending, into a predetermined shape, a metal plate material punched into a substantially rectangular shape. The end fixture  22  has a pair of first side edges  22   a  disposed so as to face the longitudinal direction of the snare wire  12 , and a pair of second side edges  22   b  disposed so as to face the direction orthogonal to the longitudinal axis of the snare wire  12 , in a state where the end fixture  22  is fixed to the sound wire section  21 . A cutout  22   c  serving as a positioning section is formed in each of the pair of second side edges  22   b . The cutout  22   c  has a substantially semicircular shape. 
     As illustrated in  FIG. 5 , when viewed from the direction orthogonal to the longitudinal axis of the snare wire  12 , the end fixture  22  is bent at an obtuse angle near each of the both first side edges  22   a . Therefore, a tapered section  25  is formed near each of the both first side edges  22   a  of the end fixture  22 . The snare wire  12  is attached along the bottom head  17  by directly fixing the both end fixtures  22  to the strainer  13  and the butt, respectively. 
     As illustrated in  FIG. 3 , the strainer  13  includes a strainer body  31 , a clamping member  35 , and a pair of bolts  37  as fixing members. A pair of upper and lower fixing plates  32  that are fixed to the outer peripheral surface of the shell  11  are formed at a rear section of the strainer body  31 . A spacer  32   a  is fixed to the surface of each of the fixing plates  32 . A holder  33  to which the end fixture  22  of the snare wire  12  is fixed is provided at a lower section the strainer body  31 . The holder  33  is attached to the strainer body  31  so as to be movable in the vertical direction. 
     Projecting sections  34  project downward from both end sections of the holder  33 , respectively. The projecting section  34  has a columnar shape and has a female screw therein. The clamping member  35  has a pair of insertion holes  35   a  provided at locations corresponding to the projecting sections  34  of the holder  33 . In addition, the insertion holes  35   a  of the clamping member  35  and the projecting sections  34  of the holder  33  are formed at locations corresponding to the cutouts  22   c  of the end fixture  22  held between the holder  33  and the clamping member  35 . 
     The pair of bolts  37  inserted from below into the insertion holes  35   a  of the clamping member  35  are fastened to the female screws of the projecting sections  34  of the holder  33 , and thus the end fixture  22  is fixed between the holder  33  and the clamping member  35 . At this time, the projecting section  34  is inserted into the insertion hole  35   a  of the clamping member  35 . The projecting section  34  of the holder  33  and the insertion hole  35   a  of the clamping member  35  function as a connecting portion that connects the clamping member  35  and the holder  33 . As a result, the snare wire  12  is fixed to the holder  33  from below by using the clamping member  35  and the bolts  37 . 
     As illustrated in  FIG. 5 , when viewed from the direction orthogonal to the longitudinal axis of the snare wire  12 , the holder  33  has inclined surfaces  33   b  at portions corresponding to the tapered sections  25  of the end fixture  22 . Similarly, the clamping member  35  also has inclined surfaces  35   b  at portions corresponding to the tapered sections  25  of the end fixture  22 . The inclined surfaces  33   b ,  35   b  of the holder  33  and the clamping member  35  are inclined at an angle identical to that of the tapered section  25  of the end fixture  22 . Therefore, when the end fixture  22  is clamped between the holder  33  and the clamping member  35 , movement of the snare wire  12  in the longitudinal direction is restricted by the tapered sections  25  and the inclined surfaces  33   b ,  35   b  of the holder  33  and the clamping member  35 . Although not illustrated, the structure for fixing the snare wire  12  to the butt is similar to the above-described structure. 
     As illustrated in  FIG. 3 , on an upper section of the strainer body  31 , an operation lever  36  is provided adjacent to the adjusting screw  30   a . The operation lever  36  is operated when the position of the snare wire  12  fixed to the holder  33  is switched to an off position separated from the bottom head  17  or an on position in contact with the bottom head  17 . The adjusting screw  30   a  is operated when the position of the holder  33  in the vertical direction is changed in order to adjust tension of the snare wire  12 . If the adjusting screw  30   a  is turned clockwise, the holder  33  moves upward and the both ends of the snare wire  12  are pulled. Therefore, tension of the snare wire  12  is increased. If the adjusting screw  30   a  is turned counterclockwise, the holder  33  moves downward. Therefore, tension of the snare wire  12  is weakened. That is, the adjusting screw  30   a  forms part of the tension adjustment mechanism  30  together with the holder  33 . 
     The tension adjusting device  40  is fixed to the strainer  13  from below together with the snare wire  12  and the clamping member  35 , by using the pair of bolts  37 . The tension adjusting device  40  includes a base member  41 , a moving member  42 , and an adjusting screw  43 . The base member  41  includes a body section  44  having a U-shaped cross section, and a pair of right and left fixing sections  45  projecting from the upper section of the body section  44 . An insertion hole  45   a  through which the bolt  37  is inserted is formed in the fixing section  45 . The tension adjusting device  40  is fixed to the clamping member  35  from below by fastening the pair of bolts  37  inserted through the fixing sections  45  to the female screws of the projecting sections  34  of the holder  33 . 
     As illustrated in  FIGS. 4 and 5 , a projecting section  44   a  that projects inside the body section  44  is provided at the center of the body section  44 . A female screw into which the adjusting screw  43  is screwed and inserted is formed in the projecting section  44   a . On each of both side walls of the body section  44 , a groove  44   b  extending from the front end toward the base end of each side wall is formed. In a state where the tension adjusting device  40  is attached to the strainer  13 , the groove  44   b  is disposed so as to face a direction substantially orthogonal to the sound wire section  21  of the snare wire  12 . 
     The moving member  42  is formed by bending into a substantially S shape, a metal plate material punched into a substantially rectangular shape. The moving member  42  has a central section  42   a , a lower section  42   b  bent at a right angle with respect to the central section  42   a , and a pair of side sections  42   c . Each of the both side sections  42   c  has substantially the same shape as that of the groove  44   b  of the base member  41 , and has a smaller width and length than the groove  44   b . The moving member  42  is slidably assembled to the base member  41  by disposing the lower section  42   b  between the both side walls of the body section  44  and engaging the both side sections  42   c  with the grooves  44   b.    
     In a state where the moving member  42  is assembled to the base member  41 , the both side walls of the body section  44  restrict movement of the moving member  42  in the lateral direction, and the grooves  44   b  restrict movement of the moving member  42  in the vertical direction. In addition, in a state where the tension adjusting device  40  is attached to the strainer  13 , the groove  44   b  is disposed so as to face the direction substantially orthogonal to the sound wire section  21  of the snare wire  12 . Therefore, the both side walls and the grooves  44   b  of the body section  44  function as guide sections that guide movement of the moving member  42  relative to the base member  41  in the direction substantially orthogonal to the sound wire section  21 . 
     An insertion hole  46  through which a front end of the adjusting screw  43  is inserted is formed in the central section  42   a . The adjusting screw  43  is screwed into the female screw of the projecting section  44   a  of the base member  41  and is inserted through the insertion hole  46  of the moving member  42 . The moving member  42  is held so as not to come off from the adjusting screw  43  by an e-ring  48  fitted in a circumferential groove  43   a  formed at a front end section of the adjusting screw  43 . In addition, the moving member  42  is fixed to the front end section of the adjusting screw  43  by tightening a nut  49  screwed into a screw section  43   b  of the adjusting screw  43 . A flat washer  47  is fitted into the screw section  43   b  between the moving member  42  and the nut  49  in order to reduce sliding resistance between the moving member  42  and the nut  49 . 
     The moving member  42  is assembled to the base member  41  so as to move forward by turning the adjusting screw  43  clockwise, and to move backward by turning the adjusting screw  43  counterclockwise. The moving direction of the moving member  42  is limited to the direction substantially orthogonal to the sound wire section  21  of the snare wire  12  by the both side walls and the grooves  44   b  of the body section  44 . Forward movement of the moving member  42  is restricted by the head section of the adjusting screw  43  coming into contact with the base member  41 . Backward movement of the moving member  42  is restricted by the both side sections  42   c  of the moving member  42  coming into contact with the bottom surfaces of the grooves  44   b.    
     The moving member  42  further includes an upper section  42   d  bent at an obtuse angle with respect to the central section  42   a , and a front end section  42   e  bent at an acute angle with respect to the upper section  42   d . The front end section  42   e  is a portion that presses the inner sound wires  23  of the snare wire  12 , and has a width equivalent to the arrangement width W of the inner sound wires  23  illustrated in  FIG. 2 . In a state where the tension adjusting device  40  is attached to the strainer  13 , the front end section  42   e  is disposed at a location closer to the strainer  13  with respect to an intermediate point M between the lower hoop  16  and the strainer  13 . Specifically, the front end section  42   e  is disposed near the lower end section of the holder  33 . As can be seen from a portion P surrounded by a dotted line in  FIG. 5 , the position of the front end section  42   e  is adjusted to a position where the inner sound wires  23  are not rubbed by an end of the front end section  42   e . Specifically, the position of the front end section  42   e  is adjusted such that the inner sound wires  23  are pressed from the outside by a portion away from the end of the front end section  42   e , that is, a rounded boundary portion between the upper section  42   d  and the front end section  42   e.    
     Next, operation procedures for adjusting tension of the snare wire  12  by the tension adjusting device  40  as an operation of the snare drum  10  described above will be described with reference to  FIGS. 1 and 5 . 
     Before adjusting tension of the snare wire  12  by the tension adjusting device  40 , first, the operation lever  36  illustrated in  FIG. 1  is operated to switch the position of the snare wire  12  fixed to the holder  33  to the on position. Subsequently, the adjusting screw  30   a  provided on the strainer  13  is turned clockwise to increase tension of the snare wire  12  or the adjusting screw  30   a  is turned counterclockwise to weaken tension of the snare wire  12 . At this time, tension of the entire snare wire  12  is adjusted by the tension adjustment mechanism  30  by operating the adjusting screw  30   a . In addition, at this time, a user operates the adjusting screw  30   a  while checking sound by hitting the batter head. 
     Next, the tension adjusting device  40  is operated to adjust only tension of the inner sound wires  23  without changing tension of the outer sound wires  24 . A two-dot chain line in  FIG. 5  illustrates a state where the moving member  42  has moved backward and the front end section  42   e  of the moving member  42  is separated from the inner sound wires  23 . From this state, the adjusting screw  43  is turned clockwise to move the moving member  42  forward. Then, the moving member  42  moves in the direction substantially orthogonal to the inner sound wires  23 , and the front end section  42   e  approaches the inner sound wires  23 . 
     A solid line in  FIG. 5  illustrates a state after the moving member  42  has moved forward and therefore the front end section  42   e  comes into contact with the inner sound wires  23 . At this time, the front end section  42   e  applies a pressing force to the inner sound wires  23  in the direction substantially orthogonal to the inner sound wires  23 . Therefore, the front end section  42   e  displaces the inner sound wires  23  in the direction intersecting the inner sound wires  23  from the state indicated by two-dot chain lines in  FIG. 5 . As a result, tension corresponding to the displacement amount of the inner sound wires  23  is applied to the inner sound wires  23 . In the case of adjusting tension of the inner sound wires  23 , the adjusting screw  43  is operated to adjust the displacement amount of the inner sound wires  23 . Specifically, in the case of increasing tension of the inner sound wires  23 , the adjusting screw  43  is turned clockwise to increase the displacement amount of the inner sound wires  23 . In the case of weakening tension of the inner sound wires  23 , the adjusting screw  43  is turned counterclockwise to decrease the displacement amount of the inner sound wires  23 . 
     In the series of operation procedures described above, the tension adjustment mechanism  30  and the tension adjusting device  40  are operated to adjust sound of the snare wire  12 . Here, the relationship between the turning direction of the adjusting screw  43  by the tension adjusting device  40  and the strength of tension of the inner sound wires  23  is identical to the relationship between the turning direction of the adjusting screw  30   a  by the tension adjustment mechanism  30  and the strength of the tension of the entire snare wire  12 . That is, the turning directions of the adjusting screws  30   a ,  43  with respect to the strength of the tension are unified. Therefore, a user can adjust tension of the snare wire  12  while alternately operating the tension adjustment mechanism  30  and the tension adjusting device  40 . 
     Therefore, according to the present embodiment, the following effects can be obtained. 
     (1) The snare drum  10  includes the tension adjusting device  40  as means for adjusting tension of the snare wire  12 . The tension adjusting device  40  is configured to displace the inner sound wires  23  in the direction intersecting the inner sound wires  23  by the front end section  42   e . According to this configuration, it is possible to apply tension to the inner sound wires  23  by the front end section  42   e . Therefore, tension of the inner sound wires  23  can be adjusted by adjusting the displacement amount of the inner sound wires  23  displaced by the front end section  42   e.    
     (2) The tension adjusting device  40  includes the moving member  42  including the front end section  42   e  and the adjusting screw  43  operated when the moving member  42  is moved. According to this configuration, a user can adjust tension of the inner sound wires  23  by turning the adjusting screw  43  to displace the inner sound wires  23  by the front end section  42   e . In addition, in a state where the tension adjusting device  40  is attached to the strainer  13 , the head section of the adjusting screw  43  is disposed between the lower hoop  16  and the strainer  13 . In this case, the head section of the adjusting screw  43  can be disposed at a position where it is easy for a user to see and operate the head section in a state where the batter head is directed upward after the tension adjusting device  40  is attached to the strainer  13 . Therefore, it becomes easy to operate the tension adjusting device  40  while checking sound by hitting the batter head. As a result, the tension adjustment operation of the snare wire  12  becomes easy. 
     (3) When the snare wire  12  is switched from the on position to the off position, tension applied to the sound wire section  21  is lost, and the entire sound wire section  21  is loosened. Therefore, when the snare wire  12  is returned to the on position, the inner sound wires  23  are likely to drop off from the moving member  42 , and there is a possibility that the operation of displacing the inner sound wires  23  by the moving member  42  may be hindered. In this regard, according to the present embodiment, in a state where the tension adjusting device  40  is attached to the strainer  13 , the front end section  42   e  of the moving member  42  is disposed at a location closer to the strainer  13  with respect to the intermediate point M between the lower hoop  16  and the strainer  13 , specifically near the lower end section of the holder  33 . Therefore, even if the snare wire  12  is switched to the off position, the inner sound wires  23  near the holder  33  hardly loosen. As a result, the inner sound wires  23  hardly drop off from the front end section  42   e  of the moving member  42  when the snare wire  12  is returned to the on position. Therefore, even if the tension adjusting device  40  is repeatedly operated, the operation of displacing the inner sound wires  23  by the moving member  42  can be kept satisfactorily. 
     (4) The snare drum  10  includes the tension adjustment mechanism  30  that adjusts tension of the entire snare wire  12 , and the tension adjusting device  40  that adjusts tension of only the inner sound wires  23  of the snare wire  12 . That is, the tension adjusting device  40  is configured to adjust the tension of part of the snare wire  12 . According to this configuration, a user can adjust tension of the entire snare wire  12  by operating the tension adjustment mechanism  30 , and can adjust tension of part of the snare wire  12  by operating the tension adjusting device  40 . Thus, by operating the tension adjustment mechanism  30  and the tension adjusting device  40  in combination, sound of the snare wire  12  can be finely adjusted, and thus sound of the snare drum  10  can be finely adjusted. 
     (5) The tension adjusting device  40  is fixed to the strainer  13 . In the snare drum  10 , it is possible to make hitting sound resonate by vibrating the shell  11 , the upper hoop  15 , the lower hoop  16 , the snare wire  12 , and the like, in addition to the drum head. In this regard, if the tension adjusting device  40  is fixed to the strainer  13 , the influence on sound of the snare drum  10  due to the tension adjusting device  40  being attached to the strainer  13  can be suppressed. In addition, in this case, since the on/off operation of the snare wire  12  and the tension adjusting operation can be performed by the same section, the snare drum  10  can be easily tuned. 
     (6) The snare wire  12  is fixed to the holder  33  from below by using the clamping member  35  and the bolts  37 . In addition, the tension adjusting device  40  is fixed to the clamping member  35  from below by using the pair of bolts  37 . According to this configuration, the bolt  37  has a function of fixing the snare wire  12  to the strainer  13  and a function of fixing the tension adjusting device  40  to the strainer  13 . Therefore, since an increase in the number of components can be suppressed, the configurations near the tension adjusting device  40  and the strainer  13  are not complicated. In addition, according to the present embodiment, the strainer  13  includes the tension adjustment mechanism  30  that adjusts tension of the entire snare wire  12 . In this case, by operating the adjusting screw  30   a  of the tension adjustment mechanism  30  to move the holder  33  up and down, the tension adjusting device  40  fixed to the holder  33  also moves up and down. Therefore, it is possible to adjust tension of the inner sound wires  23  of the snare wire  12  by operating the tension adjusting device  40 , after adjusting tension of the entire snare wire  12  by operating the tension adjustment mechanism  30 . That is, the master-slave relationship between tension adjustment by the tension adjusting device  40  and tension adjustment by the tension adjustment mechanism  30  can be clarified. 
     (7) In a state where the tension adjusting device  40  is attached to the strainer  13 , the grooves  44   b  are disposed so as to face the direction substantially orthogonal to the sound wire section  21  of the snare wire  12 . In addition, the moving member  42  is slidably assembled to the base member  41  by engaging the both side sections  42   c  with the grooves  44   b . Therefore, the moving member  42  can be assembled to the base member  41  so as to be slidable in the direction substantially orthogonal to the sound wire section  21 . Therefore, it becomes easy to move the moving member  42  in the direction substantially orthogonal to the sound wire section  21 , and it becomes easy to apply tension to the sound wire section  21  by the moving member  42 . 
     (8) The snare wire  12  is attached along the bottom head  17  by directly fixing the both end fixtures  22  to the strainer  13  and the butt, respectively. According to this configuration, since the snare wire  12  is directly fixed to the strainer  13  through the end fixture  22 , no cord or strap for attaching the snare wire  12  to the strainer  13  is required. In addition, in this case, tension of the snare wire  12  immediately after the snare wire  12  is attached to the strainer  13  is identical to tension of the snare wire  12  before the snare wire  12  is removed from the strainer  13 . Therefore, in a case where the snare wire  12  is removed in order to replace the bottom head  17 , sound of the snare drum  10  can be reproduced only by directly fixing the snare wire  12  to the strainer  13  and the butt by the both end fixtures  22 . As a result, the operation of adjusting tension of the snare wire  12  by operating the adjusting screws  30   a ,  43  is not necessary in order to reproduce sound of the snare drum  10 . 
     (9) When the end fixture  22  of the snare wire  12  is attached to the holder  33 , the tapered section  25  is clamped between the inclined surfaces  33   b ,  35   b  of the holder  33  and the clamping member  35 , at the first side edge  22   a  of the end fixture  22 . As a result, the end fixture  22  does not move in the longitudinal direction of the snare wire  12 . Therefore, the positioning of the end fixture  22  with respect to the holder  33  is becomes easy, and the mounting operation of the snare wire  12  to the strainer  13  becomes easy. In this case, the tapered sections  25 , and the both inclined surfaces  33   b ,  35   b  of the holder  33  and the clamping member  35  function as positioning sections. 
     (10) When the end fixture  22  of the snare wire  12  is attached to the holder  33 , the projecting section  34  is engaged with the cutout  22   c  at the second side edge  22   b  of the end fixture  22 . Therefore, the end fixture  22  does not move in the direction orthogonal to the longitudinal axis of the snare wire  12 . Therefore, the positioning of the end fixture  22  with respect to the holder  33  is becomes easy, and the mounting operation of the snare wire  12  to the strainer  13  becomes easy. In this case, the cutout  22   c , which is a recess, and the projecting section  34  inserted into the insertion hole  35   a  of the clamping member  35  function as a positioning section. 
     The present embodiment may be modified as follows. 
     In the present embodiment, the tension adjustment mechanism  30  may be omitted from the snare drum  10 . That is, the tension adjusting device  40  may be used to adjust tension of the entire snare wire  12 , that is, both the tension of the inner sound wires  23  and tension of the outer sound wires  24 . In this case, the configuration of the tension adjusting device  40  can be replaced with a conventional configuration of adjusting tension of a snare wire by pulling sound wires. As a result, a cord or a strap, and a complex configuration and component for pulling the cord or the strap are unnecessary. Therefore, by using the tension adjusting device  40 , tension of the snare wire  12  can be adjusted with a simple configuration. 
     In the present embodiment, a snare wire  60  illustrated in  FIG. 6  can also be applied to the snare drum  10 . The snare wire  60  includes inner sound wires  63  made of coil wires, outer sound wires  64  made of straight wires, and a pair of end fixtures  62 . Fasteners  65  are fixed to both ends of the inner sound wires  63 . Two cords  66  are fixed to the fastener  65 . The inner sound wires  63  are fixed to the end fixtures  62  through the fasteners  65  and the cords  66 . In this case, a tension adjusting device  40  is configured to displace the cords  66  in the direction intersecting the cords  66  by a front end section  42   e . According to this configuration, it is possible to apply tension to the inner sound wires  63  through the cords  66  by using the front end section  42   e . Therefore, tension of the inner sound wires  63  can be adjusted by adjusting the displacement amount of the cord  66  displaced by the front end section  42   e.    
     In the present embodiment, the tension adjusting device  40  is fixed together with the snare wire  12 , to the holder  33  provided at the lower section of the strainer  13 . In lieu of this, as illustrated in  FIG. 7 , a tension adjusting device  70  may be directly fixed to a sound wire section  21  of a snare wire  12 . The tension adjusting device  70  includes a pair of plates  71   a ,  71   b  that clamp the sound wire section  21 , fixing screws  71   c  that fix the both plates  71   a ,  71   b , and a moving member  72  that presses the sound wire section  21 . In addition, the tension adjusting devices  40 ,  70  may be attached to the shell  11 , the upper hoop  15 , the lower hoop  16 , or the butt in addition to the strainer  13  or the snare wire  12 , or may be attached so as to straddle this plurality of components. 
     In the present embodiment, the tension adjusting device  40  is configured to adjust tension of the inner sound wires  23  by pressing the inner sound wires  23  by the moving member  42 . In lieu of this, as illustrated in  FIG. 8 , a tension adjusting device  75  may be configured to adjust tension of a snare wire  12  by pulling a sound wire section  21  in a direction orthogonal to the sound wire section  21  by a moving member  76 . Solid lines in  FIG. 8  illustrate a state where the moving member  76  moves forward and a front end section  76   e  of the moving member  76  is separated from the sound wire section  21 . Two-dot chain lines in  FIG. 8  illustrate a state where the moving member  76  has moved backward and the front end section  76   e  of the moving member  76  is brought into contact with the sound wire section  21  and pulls the sound wire section  21  from inside. 
     In addition, as illustrated in  FIG. 9 , a tension adjusting device  80  may be configured to adjust tension of a snare wire  12  by pressing a sound wire section  21  in a direction intersecting the sound wire section  21  by a cam  81 . 
     In the present embodiment, the tension adjusting device  40  is used to adjust tension of the inner sound wires  23  of the snare wire  12 . In lieu of this, the tension adjusting device  40  may be configured to be able to adjust tension of the outer sound wires  24 , or may be configured to be able to adjust both of tension of the inner sound wires  23  and tension of the outer sound wires  24 . In this case, the number of front end sections  42   e  of the moving member  42  may be increased or the width of the front end section  42   e  may be changed. 
     In the present embodiment, the snare drum  10  may include a plurality of tension adjusting devices  40 . For example, the three adjustment mechanisms  113   a ,  113   b , and  113   c  illustrated in  FIG. 11  may be replaced with the tension adjusting devices  40 . 
     In the present embodiment, in order to slidably assemble the moving member  42  to the base member  41 , the grooves  44   b  are formed in the base member  41  and both the side sections  42   c  of the moving member  42  are engaged with the grooves  44   b . In lieu of this, grooves may be formed in a moving member  42 , portions of a base member  41  may be engaged with the grooves  44   b , and the moving member  42  may be slidably assembled to the base member  41 . 
     In the present embodiment, the end fixture  22  is fixed between the holder  33  and the clamping member  35 , and the snare wire  12  is fixed to the strainer  13 . In lieu of this, an end fixture  22  may be directly fixed to a holder  33  by bolts  37  without using a clamping member  35 . 
     In the present embodiment, the shape of the tapered section  25  formed near the first side edge  22   a  of the end fixture  22  may be changed to any shape such as a curved section, a projection, or the like, enabling positioning of the end fixture  22  with respect to the holder  33  and the clamping member  35 . 
     In the present embodiment, the shape of the semicircular cutout  22   c  formed in the second side edge  22   b  of the end fixture  22  may be changed to any shape such as a circular hole, a rectangular cutout, or the like, enabling positioning of the end fixture  22  with respect to the holder  33  and the clamping member  35 . 
     In the present embodiment, the inner sound wire  23  is configured of a straight wire different from the outer sound wire  24 ; however, may be configured of a straight wire identical to the outer sound wire  24 . 
     Various changes in form and details may be made to the examples above without departing from the spirit and scope of the claims and their equivalents. The examples are for the sake of description only, and not for purposes of limitation. Descriptions of features in each example are to be considered as being applicable to similar features or aspects in other examples. Suitable results may be achieved if sequences are performed in a different order, and/or if components in a described system, architecture, device, or circuit are combined differently, and/or replaced or supplemented by other components or their equivalents. The scope of the disclosure is not defined by the detailed description, but by the claims and their equivalents. All variations within the scope of the claims and their equivalents are included in the disclosure.