Abstract:
A rapid installation and detachment device for flush mounting speaker on ceiling or wall is composed of a hinge bracket, coil springs, gaiters, press fits, cushion springs and stop blocks. The above mechanisms are driven by the coil springs to rapidly and efficiently install a speaker on the hinge bracket. The detachment of the speaker never damages the surrounding surface material of the ceiling or wall. The device is applicable to all kinds of surface materials with different thickness.

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates to a rapid installation and detachment device for flush mounting speaker on ceiling or wall. By employing this device, the installation and detachment for a flush mounting speaker on the surface of the ceiling or wall can be performed more rapidly and effectively than any conventional means. 
     2. Description of the Prior Art 
     Recently due to booming economic expansion, large scale supermarkets, department stores and the whole-sale plazas are increasing at a great speed around the world. It is necessary for owners to promote their merchandise in every possible way. Among which to install flush mounting loud speakers on the ceiling or wall surface is the most effective and appealing practice even in the public buildings, schools or hospitals. The speaker installed as such looks not only clean and neat, but also is free from danger of accidental destruction. 
     However, speaking of a flush mounted ceiling speaker, for example, installation work to be carried out in high location is a tedious and time consuming work. Especially when bolt and nut combination is used to fasten the speaker onto the ceiling or wall may lead to destructing the appearance of the surface thereof after the equipment is detached. 
     For these defects noticeable on the prior art, an improvement is seriously required. The inventor of the present invention has plunged into this matter for years to study and correct these defects, and finally comes up with the present invention. 
     SUMMARY OF THE INVENTION 
     Accordingly, it is an object of the present invention to provide a rapid installation and detachment device for flush mounting speaker on ceiling or wall to perform the work in a rapid, clean and neat way by cooperation of the component parts contained in the device. 
     It is another object of the present invention that this device is applicable to speakers that are in various shapes, sizes and weights, and the ceiling and wall surface materials of various thicknesses. 
     To achieve the aforesaid objects, the present invention includes a hinge bracket with several guide sleeve bases, a detent groove formed at one side of each guide sleeve base. On the surface of the hinge bracket there are several guide hole bases. The hinge bracket is to carry the whole weight of the installation. A coil spring sleeved over the guide sleeve base is jointed to the detent groove with its one end, and to a detent groove of a gaiter with the other end thereof. The gaiter is sleeved over the coil spring. A notch is formed on the upper surface of the gaiter with a detent groove provided at its side. A helical pawl is jointed to the exterior edge of the gaiter and a fit cap screw set is provided in the gaiter. A press fit covered on the gaiter has a tapped hole formed at each of the two sides thereof with a screw set passing through so as to hold the press fit at the position on the guide hole base of the hinge bracket. A notch is formed at the center surface of the press fit with a tapped hole for the press fit to pass through. A pawl is provided at one bottom edge of the press fit. A cushion spring formed of a flat cap screw set with a compressed spring coiled on it perforates the gaiter and the press fit up and down and then is secured to a stop block. The stop block set on the notch of the press fit has a tapped hole in it, and a pawl extended from lower edge of the both sides thereof so as to form a tenon and mortise joint with the notch on the surface of the gaiter thereby controlling the gaiter at its position before starting turning motion. With this structure, the speaker is settled in the containment hole of the hinge bracket, and then rapidly and efficiently installing the hinge bracket to the holes reserved on the surface of the ceiling or wall with an angle shaped spanner or a hexagonal spanner. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The drawings disclose an illustrative embodiment of the present invention which serves to exemplify the various advantages and objects thereof, and are as follows: 
         FIG. 1  is a perspective view of the device according to the present invention. 
         FIG. 2  is an exploded view of the device according to the present invention. 
         FIG. 3A  is a sectional view of  FIG. 5A  along line A-A. 
         FIG. 3B  through  FIG. 3C  are the illustrative views showing how to settle the device of the present invention. 
         FIG. 4A  is a sectional view of  FIG. 5B  along line B-B. 
         FIG. 4B  through  FIG. 4C  are the illustrative views showing how to detach the device of the present invention. 
         FIG. 5A  is a top view showing detachment of the device according to the present invention. 
         FIG. 5B  is a top view showing installation of the device according to the present invention. 
         FIG. 6A  and  FIG. 6B  are respectively an exploded view and an assembly view of the essential component parts of the device according to the present invention. 
         FIG. 7A  and  FIG. 7B  are exemplary views showing that the device can be installed using alternative tools other than the angle shaped spanner. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
     Referring to  FIG. 1 ,  FIG. 2  and  FIG. 7A , a rapid installation and detachment device for flush mounting speaker on ceiling or wall according to the present invention can perform the work through cooperation of the component parts contained in the device. The device comprises a hinge bracket  1  with several guide sleeve bases  11  provided on its surface, as shown on  FIG. 2 . A detent groove  13  formed at one side of each guide sleeve base  11 , and guide hole  12  is formed in the guide sleeve base  11  to let the guide sleeve base pass through. On the surface of the hinge bracket  1  there are formed several guide hole bases  14 . The hinge bracket  1  is to carry whole weight of the device structure. A coil spring  2  is sleeved over the guide sleeve base  11  and secured its one end to the detent groove  13  of the hinge bracket  1 , and the other end to a detent groove  32  of a gaiter  3 . The gaiter  3 , which is sleeved over the coil spring  2 , has a notch  33  on its upper surface and the detent groove  32  is formed at the side of the notch  33  and there is a helical pawl  31  attached to the exterior edge of the gaiter  3 . The helical pawl  31  has several grooves  35  formed on its bottom surface that serve to increase gripping force of the pawl  31  with the surface material. There is a guide hole  34  formed inside the gaiter  3 . A press fit  5  provided on the gaiter  3  has a tapped hole  51  at each end to let the press fit  5  pass through and fix the press fit  5  at a guide hole base  14  on the surface of the hinge bracket  1  with a screw set  52 . There is a notch  53  formed on the central surface of the press fit  5  with a tapped hole  54  to let the press fit  5  pass through. There is a stopper  55  provided at the lower end of the press fit  5 . A cushion spring  4  formed of a compressed spring  41  coiled around a flat cap screw unit  42  perforates upwards through the gaiter  3  and the press fit  5  is secured to a stop block  6 . The stop block  6 , which is settled in the notch  53  of the press fit  5 , has a topped hole  62  inside, and a pawl  61  is extended from the lower edge of both sides thereof so as to form a tenon and mortise joint with the notch  33  on the surface of the gaiter  3  thereby controlling the gaiter  3  at its position before turning. A stopper  37  at the upper end of the helical pawl  31  is to trap the stopper  55  provided under the press fit  5  to control the device after starting to operate. An angle shaped spanner  7  is used to efficiently install the flush mounting speaker as shown on  FIG. 7A . 
     Referring to  FIG. 2 ,  FIG. 3A  through  FIG. 3C ,  FIG. 5A  and  FIG. 5B , before installation, the gaiter  3  and the helical pawl  31  are put towards the central position as shown in  FIG. 5A , then vertically put the device of the present invention at reserved position on the surface material  8  to upwardly fit the round terminal  71  of an angle shaped spanner  7  into the guide hole  12  of the hinge bracket  1  until reaching the guide hole  34  of the gaiter  3  as shown in  FIG. 3  A and  FIG. 3  C. Referring to  FIG. 2 , as the cushion spring  4  is formed of the compressed spring  41  coiled around the flat cap screw unit  42  passing upward through the gaiter  3  and the press fit  5  is fastened to the stop block  6 , the pawl  61  of the stop block  6  will upwardly displace and be liberated from the notch  33  on the gaiter  3  when the spanner  7  pushes up the flat cap screw set  42  surrounded by the gaiter  3  with its round terminal  71  as shown on  FIG. 3B . At this moment the gaiter  3  is untied and rapidly turned 180° by the coil spring  2  and held there by trapping the stopper  55  of the press fit  5  in the stopper  37  of the gaiter  3 , and the helical pawl  31  of the gaiter  3  detains the surface material  8  forcibly with the frictional force between the grooves  35  formed at the bottom of the pawl  31  and the surface material  8 . Further to this, with the aid of the cushion spring  4 , the pawl  61  of the stop block  6  is then detained by the notch  33  of the gaiter  3 . In this version the fastening of the surface material  8  with the gaiter  3  is accomplished as shown on  FIG. 5B . 
     Referring to  FIG. 4A ,  FIG. 4B ,  FIG. 4C ,  FIG. 5A  and  FIG. 5B , when detaching insert the hexagonal terminal  72  of the spanner  7  upwardly into the guide hole  12  of the hinge bracket  1  until reaching the guide hole  34  of the gaiter  3  so as to turn the gaiter  3  180° by applying torque to the guide hole  34 , and liberate the pawl  61  from the notch  33  so as to release the surface material  8  from the detention of gaiter  3 , and then with the aid of the cushion spring  4 , the pawl  61  of the stop block  6  is then detained by the notch  33  of the gaiter  3 . In this version the liberation of the surface material  8  from the detention of the gaiter  3  is accomplished as shown in  FIG. 5A . 
     Referring to  FIG. 2  and  FIG. 3A , a recessed surface  36  is formed on each of the both sides of the notch  33  so as to guide the pawl  61  of the stop block  6  to a fixed position. The pawl  31  is made helical so as to enable it to hold the surface material  8  of different thickness. Meanwhile, the numbers of gaiter  3  can be adjusted according to the speaker size. 
     Referring to  FIG. 5A  and  FIG. 5B , a speaker set pin  15  and a speaker containment hole  16  provided for the hinge bracket  1  enable the speaker of different shapes, sizes and weights that is below 15 kg to be installed and settled in the hinge bracket  1 . 
     Referring to  FIG. 6A  and  FIG. 6B , after the hinge bracket  1  is installed or detached, the pawl  61  of the stop block  6  is detained by the notch  33  of the gaiter  3  so as to control the gaiter  3  at its position. With such a tenon and mortise joint, the gaiter  3  may be stably held at its position after turning without being affected by the rotating torque of the coil spring  2 . 
     Referring to  FIG. 7A  and  FIG. 7B , For installation of the hinge bracket  1 , a pen holder, a piece of chop stick, and a screw driver or the like rod shaped tools are replaceable with the hexagonal angle shaped spanner  7  to operate the flat cap screw set  42  for rapidly turning the gaiter  3  to fasten the surface material  8 . 
     Many changes and modifications in the above described embodiment of the invention can, of course, be carried out without departing from the scope thereof. Accordingly, to promote the progress in science and the useful arts, the invention is disclosed and is intended to be limited only by the scope of the appended claims.