Abstract:
Disclosed therein is a sprinkler mounting device, in which an open-type mounting bracket adapted to mount a reducer having a head includes a means to be temporarily joined to a support bar, thereby preventing a separation of the mounting bracket from the support bar during work.

Description:
BACKGROUND OF THE INVENTION 
       [0001]    1. Field of the Invention 
         [0002]    The present invention relates to a sprinkler mounting device, and more particularly, to a sprinkler mounting device that can prevent a separation of a mounting bracket from a support bar during mounting work of a reducer. 
         [0003]    2. Background Art 
         [0004]    In general, as shown in  FIGS. 1 and 2 , a sprinkler mounting device includes: a pair of T-shaped frames  1  mounted on a ceiling parallel with each other at a predetermined interval; a pair of support units  2  perpendicularly standing and joined to the T-shaped frames  1 ; a support bar  3  disposed on upper portions of the support units  2  in such a way as to cross the T-shaped frames  1 ; and a mounting bracket  4  mounted on the support bar  3  in a laterally movable manner, so that a reducer  5  is joined thereto. 
         [0005]    Conventionally, the sprinkler mounting device is divided into two types: one being a separate type that the support bar  3  is separated from the support units  2 ; and the other being an integral type that bent portions, which serve the same role as the support units  2 , are formed at both end portions of the support bar  3 . Moreover, the mounting bracket  4  is divided into a closed type that the reducer  5  is perpendicularly and downwardly fit thereto and an open type that the reducer  5  fit the mounting bracket  4  from the front. 
         [0006]    However, because a diameter of a head  6  is larger than that of the reducer  5 , in case that the closed-type mounting bracket  4  is used, a user has to perform all operations to mount the head  6  to the reducer  5  in a state where he or she stands on a foothold after the reducer  5  is mounted on the mounting bracket  4 . 
         [0007]    In order to lessen discomfort during those operations, the open-type mounting bracket  4  for fitting the reducer  5  with the head  6  from the front thereto is typically used, but has a problem in that the mounting bracket  4  is separated from the support bar  3  during the operation to join the reducer  5  to the mounting bracket  4  in the state where the user stands on the foothold. 
         [0008]    That is, as shown in  FIG. 1 , in case that the support units  2  are disposed integrally with the support bar  3  and the closed-type mounting bracket  4  is joined to the support bar  3 , the mounting device has several advantages in that the mounting bracket  4  is not separated from the support bar  3  during the operation to mount the reducer  5  to the mounting bracket  4  in the state where the user stands on the foothold, and in that it is easy and convenient to use and handle due to the integrated structure of the components. 
         [0009]    However, in this case, the mounting device that the support units  2  are disposed integrally with the support bar  3  and the closed-type mounting bracket  4  is joined to the support bar  3  has several problems in that it is inconvenient since the user has to perform all operations to mount the head  6  to the reducer  5  in a posture to look upward on the foothold after mounting the reducer  5  to the mounting bracket  4 , in that a standardized rectangular bar cannot be used as the support bar  3 , and in that it has some difficulty in manufacturing since the support units  2  must be bent and formed at both sides of the support bar  3  in a state where the mounting bracket  4  is mounted on the support bar  3 . 
         [0010]    [ 08 ] As shown in  FIG. 2 , in case that the support bar  3  and the support units  2  are manufactured separately from each other and the open-type mounting bracket  4  is joined to the support bar  3 , the mounting device has an advantage in that the user can conveniently work since the reducer  5  with the head  6  joined thereto is mounted to the mounting bracket  4 . 
         [0011]    However, in this case, the mounting device that the support bar  3  and the support units  2  are manufactured separately from each other and the open-type mounting bracket  4  is joined to the support bar  3  has several problems in that the mounting bracket  4  may be separated from the support bar  3  during the mounting work, and in that it is difficult to manage the components individually. 
       SUMMARY OF THE INVENTION 
       [0012]    Accordingly, the present invention has been made to solve the above-mentioned problems occurring in the prior arts, and it is an object of the present invention to provide a sprinkler mounting device, in which an open-type mounting bracket adapted to mount a reducer having a head includes a means to be temporarily joined to a support bar, thereby preventing a separation of the mounting bracket from the support bar during work. 
         [0013]    To accomplish the above object, according to the present invention, there is provided a sprinkler mounting device comprising: a pair of T-shaped frames mounted on a ceiling parallel with each other at a predetermined interval; a pair of support units perpendicularly standing and joined to the T-shaped frames; a support bar disposed on upper portions of the support units in such a way as to cross the T-shaped frames; and a mounting bracket including upper and lower plates, each having an open portion and a mounting space portion communicatively formed with the open portion, so that a reducer can be inserted thereinto from a side, a retaining jaw portion formed between the open portion and the mounting space portion, an insertion portion formed by a “         ”-shaped plate for positioning the upper and lower plates parallel, the insertion portion having a height corresponding to that of the support bar, cut portions formed at both sides of the rear part of the lower plate, an elastically bent portion formed in such a way that a portion formed by the cut portion is bent to have front and rear inclined faces, and a tightening screw fastened to a screw hole formed on a vertical face located on the opposite side of the insertion portion. 
         [0014]    As described above, the mounting bracket is the open-type mounting bracket, which can be easily mounted to the support bar through the open portion without regard to types (the integral type or the separate type) of the support units and the support bar. When the user mounts the reducer to the mounting bracket in a posture that the user stands on the foothold, the position of the mounting bracket is restricted by the elastically bent portion and the vertical face to thereby prevent the separation of the mounting bracket from the support bar, whereby the mounting work of the sprinkler can be achieved conveniently and rapidly. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0015]    The above and other objects, features and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments of the invention in conjunction with the accompanying drawings, in which: 
           [0016]      FIG. 1  is a perspective view of a conventional sprinkler mounting device that a support bar and support units are formed integrally; 
           [0017]      FIG. 2  is a perspective view of another conventional sprinkler mounting device that a support bar and support units are formed separately; 
           [0018]      FIG. 3  is a perspective view of a sprinkler mounting device according to the present invention; 
           [0019]      FIG. 4  is a perspective view of support units according to the present invention; 
           [0020]      FIG. 5  is a sectional view taken along the line of X-X of  FIG. 3 ; 
           [0021]      FIG. 6  is a perspective view of a mounting bracket according to the present invention; 
           [0022]      FIG. 7  is a sectional view showing a state where the mounting bracket is joined to a support bar according to the present invention; and 
           [0023]      FIG. 8  is a sectional view showing a state where a reducer is mounted on the mounting bracket according to the present invention. 
       
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
       [0024]    Reference will be now made in detail to the preferred embodiment of the present invention with reference to the attached drawings. 
         [0025]    As shown in  FIG. 3 , a sprinkler mounting device according to the present invention includes a pair of T-shaped frames  10 , support units  20 , a support bar  30 , and a mounting bracket  40 . 
         [0026]    The T-shaped frames is mounted on a ceiling parallel with each other at a predetermined interval, and each includes a thick portion  11  on which an iron plate is overlapped with the T-shaped frame  10  in such a way as to be joined with the support unit  20 . A space portion  12  is formed between the overlapped iron plates for forming the thick portion  11 . 
         [0027]    [ 13 ] As shown in  FIGS. 4 and 5 , each of the support units  20  perpendicularly stands on the thick portion  11  of the T-shaped frame  10 , and includes: a support body  200 ; an one-sidedly bent portion  201  formed on an upper portion of the support body  200 ; a coupling hole  202  formed beneath the bent portion  201  for inserting one side of the support bar  30  thereinto; a fastening screw  204  fastened to the support bar  30  through a through hole  203  of the bent portion  201 ; projecting portions  205  formed at both sides of a lower portion of the support body  200 ; coupling space portions  206  formed in the projecting portions  205  for fitting the thick portion  11  of the T-shaped frame  10  thereto; open passageways  207  formed beneath the coupling space portions  206  for passing the thick portion  11 ; support projecting jaws  208  formed inwardly from the open passageways  207  to clamp a lower end of the thick portion  11 ; a screw hole  209  formed on the lower portion f the support body  200 ; and a fixing screw  210  fastened to the support body  200  through the screw hole  209  and having a tip portion  211  penetrating a vertical portion of the thick portion  11 . Saw-toothed projecting portions  212  are respectively formed on the coupling space portions  206 . 
         [0028]    The support bar  30  is a standardized pipe with a rectangular section, which is cut according to an interval of the T-shaped frames  10  mounted on the ceiling in parallel. 
         [0029]    As shown in  FIG. 6 , the mounting bracket  40  includes: upper and lower plates  401  and  402 , each having an open portion  403  and a mounting space portion  404  communicatively formed with the open portion  403 , so that the reducer  50  can be inserted into the mounting bracket  40  from a side; a retaining jaw portion  405  formed between the open portion  403  and the mounting space portion  404 ; an insertion portion  406  formed by a “         ”-shaped plate for positioning the upper and lower plates  401  and  402  parallel, the insertion portion  406  having a height corresponding to that of the support bar  30 ; cut portions  407  formed at both sides of the rear part of the lower plate  402 ; an elastically bent portion  408  formed in such a way that a portion formed by the cut portion  407  is bent to have front and rear inclined faces  409 ; and a tightening screw  412  fastened to a screw hole  411  formed on a vertical face  410  located on the opposite side of the insertion portion  406 . The mounting bracket  40  further includes a saw-toothed protruding portion  413  formed in front of the mounting space portion  404 . 
         [0030]    In the sprinkler mounting device according to the present invention, as shown in  FIG. 5 , the support units  20  are joined with the T-shaped frames  10  in such a way that the tip portions  211  penetrate sides of the thick portions  11  by tightening the fastening screws  210  in a state where the thick portions  11  of the T-shaped frames  10 , which are mounted on the ceiling parallel, are positioned in the coupling space portions  206  through the open passageways  207 . 
         [0031]    When the fixing screw  210  is tightened, the thick portion  11  is in close contact with the saw-toothed projecting portion  212 , and the support projecting jaws  208  are caught to the lower end of the thick portion  11  to thereby prevent the support unit  20  from being separated through the open passageway  207 . 
         [0032]    Both sides of the support bar  30  with the rectangular section are inserted into the coupling holes  202  of the support units  20 , and then, the fastening screw  204  penetrates and fixes the support bar  30  through the coupling hole  202  of the bent portion  201 . 
         [0033]    In order to mount the mounting bracket  40  to the support bar  30 , the insertion portion  406  is fit to the support bar  30  from the rear. 
         [0034]    In this instance, as shown in  FIG. 7 , the elastically bent portion  408  serves to prevent a separation of the support bar  30  between the upper and lower plates  401  and  402  in such a way as to be returned to an original state by its restoring force when the support bar  30  touches the vertical face  410  after the inclined face  409  is pressed down by the support bar  30 . 
         [0035]    In the above state, when the reducer  50  with the head  60  is pushed from the open portion  403  toward the mounting space portion  404  and the tightening screw  412  is tightened, as shown in  FIG. 8 , the mounting bracket  40  is pulled backwardly, so that the saw-toothed protruding portion  413  and the support bar  30  clamps the reducer  50 , whereby mounting work of the sprinkler is finished. 
         [0036]    The elastically bent portion  408  is pressed by the support bar  30  when the mounting bracket  40  is pulled backwardly, and the retaining jaw portion  405  serves to prevent the reducer  50  from being separated through the open portion  403 . 
         [0037]    As described above, the mounting bracket  40  is the open-type mounting bracket, which can be easily mounted to the support bar  30  without regard to types of the support units  20  and the support bar  30 . When the user mounts the reducer  50  to the mounting bracket  40  in a posture that the user stands on the foothold, the position of the mounting bracket  40  is restricted by the elastically bent portion  408  and the vertical face  410  to thereby prevent the separation of the mounting bracket  40  from the support bar  30 , whereby the mounting work of the sprinkler can be achieved conveniently and rapidly. Moreover, the sprinkler mounting device according to the present invention can provide the same structural durability as the integral-type device since the T-shaped frames  10  and the support units  20  are joined with each other through the fastening screws  210  and the support units  20  and the support bar  30  are joined with each other through the fastening screws  204 . 
         [0038]    While the present invention has been described with reference to the particular illustrative embodiment, it is not to be restricted by the embodiment but only by the appended claims. It is to be appreciated that those skilled in the art can change or modify the embodiment without departing from the scope and spirit of the present invention.