Abstract:
A speaker stacking structure includes a speaker, the speaker having two bearing walls at two sides of the speaker cabinet thereof, a plurality of locating blocks respectively symmetrically fastened to the bearing walls of the speaker, each locating block having a plughole, and a plurality of fastening members insertable into the plugholes of the locating blocks to join two speakers in a stack.

Description:
BACKGROUND OF THE INVENTION  
       [0001]     1. Field of the Invention  
         [0002]     The present invention relates generally to speakers and, more specifically, to a speaker stacking structure, which enables a number of speakers to be conveniently positively arranged in a stack.  
         [0003]     2. Description of the Related Art  
         [0004]     In some cases, speakers may be arranged in a stack. However speakers may fall to the ground upon a vibration or impact if they are simply put one above another. Therefore, positioning members must be used to fix speakers in position after arranged in a stack. There are speaker racks adapted to hold a number of speakers at different elevations. However, these speaker racks are designed to fit specific size or sizes of speakers, not practical for holding assorted sizes of speakers.  
         [0005]     Therefore, it is desirable to provide a speaker stacking structure that eliminates the aforesaid problems.  
       SUMMARY OF THE INVENTION  
       [0006]     The present invention has been accomplished under the circumstances in view. It is the main object of the present invention to provide a speaker stacking structure, which enables a number of speakers to be arranged in a stack without the use of any other positioning structure or apparatus. It is another object of the present invention to provide a speaker stacking structure, which keeps the arranged stack of speakers firmly in unity to cause a sense of beauty. It is still another object of the present invention to provide a speaker stacking structure, which enables a number of speakers of different sizes to be arranged in a stack to form one of a variety of combinations.  
         [0007]     To achieve these and other objects of the present invention, the speaker stacking structure comprises a speaker, the speaker having a speaker cabinet, the speaker cabinet having a receiving chamber adapted to accommodate speaker circuit means, and two bearing walls disposed at two opposite sides; a plurality of locating blocks respectively symmetrically fastened to the bearing walls of the speaker, the locating blocks each having a block body, the block body having a mounting face and a bearing face opposite to the mounting face, the mounting face being disposed in contact with the bearing wall of the speaker, the bearing face being disposed in contact with the bearing face of another locating block, a mounting device respectively fastened to said bearing wall of the speaker, and a plughole; and a plurality of fastening members adapted to connect two speakers together, the fastening members each having a stem insertable into the plughole of each said locating block. 
     
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0008]      FIG. 1  is an exploded view of two speakers constructed according to the present invention.  
         [0009]      FIG. 2  is an exploded view of a speaker stacking structure according to the present invention.  
         [0010]      FIG. 3  is an exploded side plain view of the speaker stacking structure according to the present invention.  
         [0011]      FIG. 4  is a side plain view showing two speakers arranged in a stack according to the present invention.  
         [0012]      FIG. 5  is an enlarged view of a part of  FIG. 4 .  
         [0013]      FIG. 6  is an exploded side plain view of a part of an alternate form of the speaker stacking structure according to the present invention.  
         [0014]      FIG. 7  is an exploded view in section of a part of another alternate form of the speaker stacking structure according to the present invention. 
     
    
     DETAILED DESCRIPTION OF THE INVENTION  
       [0015]     Referring to FIGS.  1 ˜ 5 , a speaker stacking structure in accordance with the present invention is shown including a speaker  10 , a plurality of locating blocks  30 , a plurality of fastening members  50 , and two handles  70 .  
         [0016]     The speaker  10  has a speaker cabinet  11  defining a receiving chamber  12  adapted to accommodate speaker circuit means (not shown). The speaker cabinet  11  has two opposite bearing walls  13 , a plurality of mounting holes  14  symmetrically formed in the bearing walls  13  (for example, four mounting holes in each bearing wall), two handle holders  15  respectively disposed at two ends of the longitudinal axis, and a plurality of tie holes  16  symmetrically formed in the handle holders  15  (for example, four tie holes in each handle holder).  
         [0017]     The locating blocks  30  each have a wedge-like block body  31 . The wedge-like block body  31  has a mounting face  33  disposed at a bottom side of the block body  31 , a bearing face  34  disposed at a top side of the block body  31  opposite to the mounting face  33 , two mounting devices (for example, countersunk holes)  35  for fastening to the mounting holes  14  of the speaker cabinet  11  by screws B 1 , two tapered plugholes  37 , and two countersunk holes  38  respectively formed in the bearing face  34  integral with the orifices of the tapered plugholes  37 .  
         [0018]     The fastening members  50  each have a tapered stem  51  for plugging into the tapered plugholes  37  of the locating blocks  30 , a shoulder  53  for fitting into the countersunk holes  38  of the locating blocks  30 , threads  55  extended around the periphery of the stem  51 , and an axle hole  57  axially extended through the two ends.  
         [0019]     The handles  70  each have a handle body  71 , and two mounting portions  73  respectively extended from two ends of the handle body  71  for fastening to the tie holes  16  in the handle holders  15  by screws B 2  for enabling the user to carry the speaker  10  with one or both hands.  
         [0020]     The assembly process of the present invention is outlined hereinafter with reference to  FIGS. 2 and 3 . Attach the mounting face  33  of each locating block  30  to each bearing wall  13  of the speaker  10  respectively, and then affix the respective mounting portions  35  to the respective mounting holes  14  by screws B 1 .  
         [0021]     When wishing to arrange two speakers  10  in a space, as shown in  FIGS. 4 and 5 , insert the stems  51  of the fastening members  50  into the plugholes  37  in the locating blocks  30  at one bearing wall  13  of the speaker cabinet  11  of the first speaker, and then couple the plugholes  37  in the locating blocks  30  at one bearing wall  13  of the speaker cabinet  11  of the second speaker to the stems  51  of the installed fastening members  50 , and thus the two speakers are arranged in a stack.  
         [0022]     The speaker stacking structure can be designed for enabling a number of speakers to be connected in series in horizontal direction.  
         [0023]      FIG. 6  shows an alternate form of the present invention. According to this embodiment, each locating block  30 A is adjustably slidably coupled to a respective coupling member  20 A at the speaker. As illustrated, the coupling member  20 A has a dovetail tongue  21 A, and the locating block  30 A has a dovetail groove  32 A coupled to the dovetail tongue  21 A. This design enables the user to adjust the pitch between the two locating blocks at each bearing wall of the speaker cabinet of the speaker.  
         [0024]      FIG. 7  shows another alternate form of the present invention. According to this embodiment, fitting elements  39 A are selectively mounted in each locating block for accommodating a respective fastening member  50 . The fitting elements  39 A define a respective plughole for receiving a respective fastening member  50 .  
         [0025]     Further, the locating blocks may be directly molded from plastics on the speaker cabinet.  
         [0026]     As indicated above, the invention has the following features: 
        1. The invention enables a number of speakers to be conveniently arranged in a stack without the use of any other positioning structure or apparatus.     2. The invention enables the user to arrange a number of speakers in a stack easily, keeping the arranged stack of speakers firmly in unity to cause a sense of beauty.     3. The invention enables a number of speakers of different sizes to be arranged in a stack to form one of a variety of combinations.