Patent Publication Number: US-10770042-B1

Title: Rod holder for musical instrument

Description:
FIELD OF THE INVENTION 
     The present invention relates to a support structure for musical instrument rods, and more particularly to a holder for adjusting angles at which musical instrument rods are disposed. 
     BACKGROUND OF THE INVENTION 
     During a musical performance, it is required to set up a variety of musical instruments for performers to use. A performer will use a musical instrument rod fixing structure provided in FIG. 1 of the U.S. Pat. No. 9,633,635 B2 to fix two musical instrument rods. Each musical instrument rod is disposed a musical instrument such as cymbal, drum, cow bell, etc. Therefore, two musical instruments can be fixed at the same time by the side of the performer. 
     During a musical performance, the performer will need to adjust a disposing angle of a musical instrument. Therefore, the performer also uses a rotary joint provided in U.S. Pat. No. 9,310,021 B2. The rotary joint comprises a lower joint and an upper joint. After the rotary joint is rotated and loosened, a user can rotate and change relative angles of the upper joint and the lower joint. When the performer fixes the musical instrument to the upper joint and changes the relative angles of the upper joint and the lower joint, the disposing angle of the musical instrument can be adjusted to meet the need of the musical performance. 
     The musical instrument rod fixing structure described above cannot meet the need of adjusting the disposing angle of the musical instrument. Even though the rotary joint mentioned above allows the user to adjust the disposing angle of the musical instrument, the structure of the rotary joint is too complicated to be adjusted. Specifically, during adjustment, the user is required to first rotate and loosen the rotary joint to allow an engaging teeth portion (the element  68  shown in FIG. 5 of U.S. Pat. No. 9,310,021 B2) to be completely disengaged from a corresponding teeth portion (the element  58  shown in FIG. 5 of U.S. Pat. No. 9,310,021 B2) before adjusting. After adjustment, the engaging teeth portion is re-engaged with the corresponding teeth portion before tightening the rotary joint, which is quite troublesome in operation, and obviously cannot meet the requirements in usage. 
     SUMMARY OF THE INVENTION 
     Therefore, a main object of the present invention is to disclose a rod holder for musical instrument that is simple in structure and fairly convenient in operation. 
     In order to achieve the above object, the present invention is a rod holder for musical instrument comprising two clamp sets and a connecting ring, wherein each clamp set comprises a fixed clamping block, a movable clamping block, a locking member and a cylindrical portion. The locking member drives the movable clamping block to move toward the fixed clamping block. One surface of the fixed clamping block and one surface of the movable clamping block which correspond to each other are respectively recessed inwardly and face to each other to form a clamping groove. The cylindrical portion is connected to the fixed clamping block, and one side of the cylindrical portion opposite to the clamping groove is disposed with a circular disk. 
     The connecting ring comprises two arcuate members, a first end of one of the two arcuate members is pivotally connected to a first end of another arcuate member by a hinge, and a second end of one of the two arcuate members is fixedly connected to a second end of another arcuate member by a pressing member. Thus, the two arcuate members are assembled to form an inner ring surface and two approximately circular grooves, and the two approximately circular grooves are located at the inner ring surface. The two circular disks of the two clamp sets are respectively disposed in the two approximately circular grooves in a rotatable manner, and the pressing member presses the two second ends of the two arcuate members to force the two second ends to be relatively closer to each other and reduce the two approximately circular grooves, the two circular disks are respectively clamped and fixed by the two approximately circular grooves. 
     Accordingly, the design of the two circular disks respectively rotating in the two approximately circular grooves allows the two clamp sets capable of rotating relative to the connecting ring, and thus relative angles of the two clamp sets can be changed. Moreover, the two clamp sets clamp a musical instrument rod through the clamping groove, respectively. Therefore, relative angles of the two musical instrument rods can be adjusted by adjusting the relative angles of the two clamp sets, and also meets the requirements in operation. Further, the circular disk is rotatably disposed in the approximately circular groove, when the pressing member presses and reduces the approximately circular groove to clamp and fix the circular disk, a user can still force the circular disk to rotate by resisting a clamping force of the approximately circular groove. Thus, the relative angles of the two clamp sets can still be changed, which is quite simple and convenient in operation and can meet the requirements in usage. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a perspective assembly view of the structure of a rod holder for musical instrument of the present invention; 
         FIG. 2  is an exploded perspective view of the structure of the rod holder for musical instrument of the present invention; 
         FIG. 3  is a schematic view of the rod holder for musical instrument of the present invention while using 
         FIG. 4  is another schematic view of the rod holder for musical instrument of the present invention while using. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     The technical contents, features and efficacies of the present invention are clearly presented in the following detailed description of the preferred embodiments with reference to the accompanying drawings. 
     Please refer to  FIG. 1  and  FIG. 2 , the present invention is a rod holder for musical instrument comprising two clamp sets  10  and a connecting ring  30 , wherein each clamp set  10  comprises a fixed clamping block  11 , a movable clamping block  12 , a locking member  13 , and a cylindrical portion  14 . The locking member  13  drives the movable clamping block  12  to move toward the fixed clamping block  11 . One surface of the fixed clamping block  11  and one surface of the movable clamping block  12  which correspond to each other are respectively recessed inwardly and face to each other to form a clamping groove  15 . The cylindrical portion  14  is connected to the fixed clamping block  11 , and one side of the cylindrical portion  14  opposite to the clamping groove  15  is disposed with a circular disk  16 . 
     The locking member  13  comprises a bolt  131  and a manual rotating knob  132 . The bolt  131  is pivotally connected to the fixed clamping block  11  and passes through the movable clamping block  12 . The manual rotating knob  132  is screwed to the bolt  131  and pushes the movable clamping block  12  to move toward the fixed clamping block  11 . 
     In addition, the clamp set  10  further includes a spacing adjustment component  17 . The spacing adjustment component  17  comprises a non-circular bolt  171  and a nut  172 . The non-circular bolt  171  is pivotally connected to the fixed clamping block  11  and passes through the movable clamping block  12 . The nut  172  is screwed to the non-circular bolt  171  and pushes the movable clamping block  12  to move toward the fixed clamping block  11 . The movable clamping block  12  comprises a non-circular through hole  121 , the non-circular through hole  121  is provided for the non-circular bolt  171  to pass through, and the non-circular through hole  121  restrains the non-circular bolt  171  from rotating axially relative to the non-circular through hole  121 . The spacing adjustment component  17  and the locking member  13  are respectively located by two sides of the movable clamping block  12 . 
     In addition, the movable clamping block  12  comprises a groove  122 , the groove  122  is provided for the bolt  131  to pass through, and a side of the groove  122  opposite to the clamping groove  15  comprises a side opening  123 . 
     The connecting ring  30  comprises two arcuate members  31 , a first end  311  of one of the two arcuate members  31  are pivotally connected to a first end of another arcuate member by a hinge  32 , and a second end  312  of one of the two arcuate members  31  are fixedly connected to a second end of another arcuate member by a pressing member  33 . Thus, the two arcuate members  31  are assembled to form an inner ring surface  34  and two approximately circular grooves  341 , and the two approximately circular grooves  341  are located at the inner ring surface  34 . The two circular disks  16  of the two clamp sets  10  are respectively disposed in the two approximately circular grooves  341  in a rotatable manner, and the pressing member  33  is capable of pressing the two second ends  312  to force the two second ends to be relatively closer to each other, thereby reducing the two approximately circular grooves  341 , and the two circular disks  16  are respectively clamped and fixed by the two approximately circular grooves  341 . 
     The pressing member  33  comprises a pressing bolt  331  and a pressing nut  332 . The pressing nut  332  is screwed to the pressing bolt  331 , and the pressing bolt  331  passes through the two arcuate members  31 . Thus, the two second ends  312  are closed to each other through the compression of the pressing nut  332 . 
     Please refer to  FIG. 3 , the two clamp sets  10  are used to clamp musical instrument rods  40 ,  41 , respectively, and the two musical instrument rods  40 ,  41  are provided for installing cymbal clamps  50 ,  51 , respectively. The two cymbal clamps  50 ,  51  are respectively provided for installing a cymbal (not shown in the figure). 
     Alternatively, please refer to  FIG. 4 . One of the clamp sets  10  is used to clamp a musical instrument rod  42 . The musical instrument rod  42  is provided for installing a drum rack  60 , and the drum rack  60  is provided for mounting a drum musical instrument (not shown in the figure). 
     As described above, features of the present invention are: 
     1. The design of the two circular disks respectively rotating in the two approximately circular grooves allows the two clamp sets capable of rotating freely relative to the connecting ring, and thus relative angles of the two clamp sets can be changed. Moreover, the two clamp sets clamp the musical instrument rods through the clamping groove, respectively. Therefore, relative angles of the musical instrument rods can be adjusted by adjusting the relative angles of the two clamp sets. 
     2. When the pressing member presses and reduces the approximately circular groove to clamp and fix the circular disk, a user can still force the circular disk to rotate by resisting a clamping force of the approximately circular groove, so that the relative angles of the two clamp sets can still be changed, which is quite simple and convenient in operation. 
     3. The structure of the invention is simple, the processing is easy and the assembly is fast, and the manufacturing cost is effectively reduced.