Patent Publication Number: US-7712800-B2

Title: Fireproof door lock assembly

Description:
FIELD OF THE INVENTION 
   The present invention relates to door locks, and particularly to a fireproof door lock assembly, wherein the driven mechanism of a press unit can be used to open or close a fireproof door lock. Furthermore, the driving body is combined with a spring and vibration reduction elements so as to have the effect of fast restoration and vibration reduction. Furthermore, a pin unit is used to help the operation of a latch of a door. 
   BACKGROUND OF THE INVENTION 
   Generally, in operation of a fireproof door lock, a press handle in a handle frame of the fireproof doorplate is pressed so that the lock stud in the lock casing is reduced inwards. Thus the door lock will release and thus is opened. However the handle slides along an inclined recess track at one of two sides of a retaining seat in the handle frame seat. The user must apply a great force and only the vertical component of the force is effective. Furthermore, if the force is too great, the lock will be locked. 
   Besides, no structure can provide proper restoring force to the retaining seat, when it is desired to close an opened lock, the operation is not smooth. 
   SUMMARY OF THE INVENTION 
   Accordingly, the primary object of the present invention is to provide a fireproof door lock assembly, wherein the driven mechanism of a press unit can be used to open or close a fireproof door lock. Furthermore, the driving body is combined with a spring and vibration reduction elements so as to have the effect of fast restoration and vibration reduction. Furthermore, a pin unit is used to help the operation of a latch of a door. 
   To achieve above objects, the present invention provides an fireproof door lock assembly comprising a handle seat frame being a U shape frame; a press unit installed in the U shape frame of the handle seat frame; the press unit having a driven mechanism; the driven mechanism including a driven unit; a plurality of buckling units, an elastic unit, at least one vibration reduction element, at least one driving bodies, a bottom plate and a pin unit; a press element having an L shape and being attached to the driving body by using a plurality of studs passing through a connecting unit, press element and driving unit; and fireproof door lock installed in front of the handle seat frame; so that the driven mechanism of the press unit having the effect of opening the fireproof door look. 
   The various objects and advantages of the present invention will be more readily understood from the following detailed description when read in conjunction with the appended drawing. 

   
     BRIEF DESCRIPTION OF THE DRAWINGS 
       FIG. 1  is a perspective view of the present invention. 
       FIG. 2  is an exploded perspective view of the driven mechanism of the present invention. 
       FIG. 3  is a lateral view of the driven mechanism of the present invention. 
       FIG. 4  is an explosive schematic view of the driving body of the present invention. 
       FIG. 5  shows the operation of the driven mechanism of the present invention. 
       FIG. 6  is an elevational view of the pin unit of the present invention. 
       FIG. 7  is a schematic view showing one embodiment of the present invention. 
       FIG. 8  is a schematic view about the operation of the embodiment of the present invention. 
   

   DETAILED DESCRIPTION OF THE INVENTION 
   In order that those skilled in the art can further understand the present invention, a description will be provided in the following in details. However, these descriptions and the appended drawings are only used to cause those skilled in the art to understand the objects, features, and characteristics of the present invention, but not to be used to confine the scope and spirit of the present invention defined in the appended claims. 
   Referring to  FIGS. 1 ,  2 , and  7 , the structure of the present invention will be described herein. 
   A handle seat frame  1  is a U shape frame. 
   A press unit  2  is installed in the U shape frame of the handle seat frame  1 . The press unit  2  has a driven mechanism  21 . The driven mechanism  21  includes a driven unit  25 , a plurality of buckling units  22 , an elastic unit  23 , at least one vibration reduction element  24  (in this embodiment, there are two vibration reduction elements  24  are illustrated), at least one driving bodies  25 , a bottom plate  26  and a pin unit  26 . The driven unit  25  includes a linkage rod  211  which has a plurality of stud holes  2110  for receiving respective studs  2111 . One end of the linkage rod  211  has a via hole  2112  at one end thereof. Each buckle unit  22  has a through hole  220  for combining with the elastic unit  23  and the vibration reduction elements  24 . A plurality of studs  2111  are used to lock the buckle unit  22  to the vibration reduction element  24 . The linkage rod  211  passes through the two buckle units  22 , the elastic unit  23 , the vibration reduction element  24  and the two driving body  25 . The driving body  25  has a recessed seat  251 . Two sides of the recessed seat  251  have a plurality of stud holes  250  and a plurality of displace grooves  252 . The bottom plate  26  is formed with a through hole  260  and a buckle sheet  261 . The bottom plate  26  serves to support the driving bodies  25  by using screws to lock the bottom plate  26  and the driving bodies  25 . The pin unit  26  includes a pivotal unit  271 , a hook  272  and a spring  273 . 
   Referring to  FIG. 4 , a press element  255  has an L shape is attached to the driving body  25  by using a plurality of studs  253  passing through a connecting unit  256 , press element  255  and driving unit  25  so as to pivotally fix the press element  255  to the driving unit  25  and a plurality of studs  253  passing through a driving assembly  257 , the press element  255  and the linkage rod  211  so as to pivotal fix the press element  255  to the linkage rod  211 . A C ring  2531  is installed between one end of the stud  253  and a lateral side of the driving unit  25 . 
   An upper plane  2551  of the driving body  25  is in contact with an upper sheet of the press unit  2  and another end thereof is extended downwards with two extending sheets  2552 . Each extending sheet  2552  is formed with an upper through hole  25520  and a lower through hole  25521 . The upper through hole  25520  serves to connect with one end of the connecting unit  256 . Another end of the connecting unit  256  is combined with the recessed seat  251 . The lower through hole  25521  serves to connect with one end of the driving assembly  257 . The driving assembly  257  has an L shape. Another end of the driving assembly is formed with a slot  2571 . A stud  2572  serves to combine the driving assembly  257  to the displace groove  252  of the recessed seat  251 . 
   A fireproof door lock  3  is installed in front of the handle seat frame  1 . The driven mechanism  21  of the press unit  2  has the effect of opening the fireproof door look  3 . 
   The press unit  2  is combined to the U shape handle seat frame  1  and then the handle seat frame  1  is combined with a cover plate  4  and a buckle  5 . 
   Referring to  FIGS. 1 ,  3  and  5 , when the press unit  2  is pressed, the press element  255  of the press unit  2  is pressed to resist against the connecting unit  256 . Another end thereof will drive the driving assembly  257  to make the linkage rod  211  move through the insertion studs  2572  so as to drive another driving body  25 . The spring  273  between two driving bodies  25  are compressed. When the vibration reduction element  24  contacts the driving body  25 , the press unit  2  is released. The spring  273  will return to the original position and the two driving bodies restores. 
   Referring to  FIGS. 6 ,  7  and  8 , in the pin unit  27  of the present invention, a pivotal unit  271  is combined with a hook  272  on the bottom plate  26 . One end of the hook  272  is connected with one end of the spring  273  and another end of the spring  273  is assembled to the buckle sheet  261  of the bottom plate  26 . The pivotal unit  271  has an hexagonal hole  2710 . When it is desired to retain the fireproof door lock  3  in an open state, the press unit  2  is pressed to open the fireproof door lock  3 . Then the pivotal unit  271  is adjusted to hook the via hole  2112  of the linkage rod  211  so as to fix the fireproof door lock  3  in an open position. 
   The present invention is thus described, it will be obvious that the same may be varied in many ways. Such variations are not to be regarded as a departure from the spirit and scope of the present invention, and all such modifications as would be obvious to one skilled in the art are intended to be included within the scope of the following claims.