Patent Publication Number: US-2015069769-A1

Title: Lock structure

Description:
FIELD OF THE INVENTION 
     The present invention is generally related to a lock structure, which particularly relates to the lock structure with a positioning ring. 
     BACKGROUND OF THE INVENTION 
     A conventional lock structure  200  illustrated in  FIG. 7  comprises a first handle assembly  210  and a second handle assembly  220 , wherein the first handle assembly  210  comprises an escutcheon  211 , a mounting plate  212  and a fixing member  213 , and the second handle assembly  220  comprises a supporting rod  221 . The mounting plate  212  comprises a fixing hole  212   a.  The fixing member  213  is fixedly secured at the supporting rod  221  of the second handle assembly  220  via the fixing hole  212   a  to make the first handle assembly  210  and the second handle assembly  220  engaged with a door  300 . The escutcheon  211  covers the mounting plate  212  to shade the fixing member  213 . However, the supporting rod  221  of the second handle assembly  220  is located at an assembly hole  310  of the door  300 . When one intends to make the fixing member  213  pass through the fixing hole  212   a  and fixedly secure at the supporting rod  221 , the fixing member  213  is not able to align with the supporting rod  221  therefore leading the difficulty in assembling the lock structure  200 . 
     SUMMARY 
     The primary object of the present invention is to make a fixing member conveniently and rapidly engaged with a positioning rod via guidance of a positioning barrel of a positioning ring to prevent the fixing member from not aligning with the positioning rod so that the difficulty in assembling lock structure is eliminated. The lock structure of the present invention includes a first mounting plate and a positioning ring. The first mounting plate comprises a bottom plate and a plurality of fixing holes penetrating the bottom plate. The positioning ring comprises a ring body, an opening and a plurality of positioning members. The opening is surrounded by the ring body. Each of the positioning members comprises a positioning barrel, the positioning barrel comprises a body and a penetration hole, and each of the penetration holes is surrounded by each of the bodies. Each of the penetration holes corresponds to each of the fixing holes of the first mounting plate, and each of the fixing holes reveals each of the penetration holes. 
     In this invention, by each of the penetration holes of the positioning barrel corresponding to each of the fixing holes, when the lock structure is assembled at a door, the fixing member is able to align with a positioning rod via guidance of each of the penetration holes so as to make the assembly of the lock structure more convenient and more rapid. 
    
    
     
       DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a perspective assembly diagram illustrating a lock structure in accordance with a first embodiment of the present invention. 
         FIG. 2  is a perspective exploded diagram illustrating the lock structure in accordance with the first embodiment of the present invention. 
         FIG. 3  is a partial section view illustrating the lock structure in accordance with the first embodiment of the present invention. 
         FIG. 4  is a section view illustrating the lock structure in accordance with the first embodiment of the present invention. 
         FIG. 5  is a perspective assembly diagram illustrating a lock structure in accordance with a second embodiment of the present invention. 
         FIG. 6  is a section view illustrating the lock structure in accordance with the second embodiment of the present invention. 
         FIG. 7  is a section view illustrating a conventional lock structure. 
     
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
     With reference to  FIGS. 1 ,  2 ,  3  and  4 , a lock structure  100  in accordance with a first embodiment of the present invention includes an escutcheon  110 , a first mounting plate  120 , a positioning ring  130 , a second mounting plate  140  and a plurality of fixing members  150 , wherein the first mounting plate  120  and the second mounting plate  140  are located at an inside and an outside of a door D respectively. The lock structure  100  is engaged with the door D by the fixing members  150 . 
     Please refer to  FIGS. 2 ,  3  and  4 , the escutcheon  110  comprises a ring wall  111  and an accommodating slot  112  surrounded by the ring wall  111 , wherein the first mounting plate  120  is disposed within the accommodating slot  112 , and the escutcheon  110  covers the first mounting plate  120 . The first mounting plate  120  comprises a bottom plate  121 , a plurality of fixing holes  122  and a lateral wall  123  formed at the bottom plate  121 . Each of the fixing holes  122  penetrates through the bottom plate  121 . With reference to  FIG. 3 , in this embodiment, a distal end of the ring wall  111  of the escutcheon  110  is bent toward the accommodating slot  112  to make the first mounting plate  120  constrained within the accommodating slot  112  in a wrapping manner. 
     With reference to  FIGS. 2 ,  3  and  4 , the positioning ring  130  is disposed within the accommodating slot  112 , and the first mounting plate  120  is located between the escutcheon  110  and the positioning ring  130 . The positioning ring  130  comprises a ring body  131 , an opening  132  and a plurality of positioning members  133 , wherein the opening  132  is surrounded by the ring body  131 . Each of the positioning members  133  comprises a connection rib  133   a  and a positioning barrel  133   b,  each of the connection ribs  133   a  connects to the ring body  131 , and the connection rib  133   a  is extended toward a center line L of the ring body  131 . The positioning barrel  133   b  comprises a body  133   c  and a penetration hole  133   d,  each of the bodies  133   c  connects to each of the connection ribs  133   a  and extends toward the second mounting plate  140 . Each of the penetration holes  133   d  is surrounded by each of the bodies  133   c.  Each of the penetration holes  133   d  corresponds to each of the fixing holes  122  of the first mounting plate  120 , and each of the fixing holes  122  reveals each of the penetration holes  133   d.  In this embodiment, the positioning ring  130  comprises a plurality of protrusions  134  formed at the ring body  131 , wherein each of the protrusions  134  is located between the lateral wall  123  and the ring body  131 , and a distal end of each of the protrusions  134  comprises a guiding surface  134   a.  The guiding surface  134   a  faces toward the first mounting plate  120 , and the guiding surface  134   a  is a curved surface. When the positioning ring  130  assembles the first mounting plate  120 , the guiding surface  134   a  of each of the protrusions  134  contacts against the lateral wall  123  of the first mounting plate  120 , and the ring body  131  retracts toward the center line L inwardly owing to flexibility of the ring body  131 . Thereafter, by elasticity of the ring body  131 , the positioning ring  130  is lodged inside the first mounting plate  120  via the protrusions  134 . 
     With reference to  FIG. 4 , the second mounting plate  140  comprises a surface  141  and a plurality of positioning rods  142 , wherein the surface  141  faces toward the first mounting plate  120 , each of the positioning rods  142  engages with the surface  141  and protrudes from the surface  141 , and each of the positioning barrels  133   b  of the positioning ring  130  corresponds to each of the positioning rods  142 . Therefore, once the penetration hole  133   d  of each of the positioning barrels  133   b  is aligned with each of the positioning rods  142 , each of the fixing members  150  enables to pass through each of the fixing holes  122  of the first mounting plate  120  and to fixedly secure at each of the positioning rods  142  of the second mounting plate  140  via guidance of each of the penetration holes  133   d  so as to make the lock structure  100  engaged with the door D. In this invention, the assembly of the lock structure  100  is more convenient and more rapid. 
     With reference to  FIGS. 5 and 6 , a lock structure  100  is illustrated in accordance with a second embodiment of the present invention. The primary difference between the second embodiment and the first embodiment is that each of the positioning rods  142  of the second mounting plate  140  is inserted into each of the penetration holes  133   d  of the positioning member  133  to make each of the positioning rods  142  alignable with each of the fixing holes  122  of the first mounting plate  120 . Accordingly, when each of the fixing members  150  passes through each of the fixing holes  122  of the first mounting plate  120 , each of the fixing members  150  is able to fixedly secure at each of the positioning rods  142  so as to ignore the step of making the penetration hole  133   d  of each of the positioning barrels  133   b  align with each of the positioning rods  142  for making the assembly of the lock structure  100  more rapid. 
     While this invention has been particularly illustrated and described in detail with respect to the preferred embodiments thereof, it will be clearly understood by those skilled in the art that it is not limited to the specific features and describes and various modifications and changes in form and details may be made without departing from the spirit and scope of this invention.