Patent Publication Number: US-11643847-B2

Title: Length adjustable door lock

Description:
BACKGROUND OF THE PRESENT INVENTION 
     Field of Invention 
     The present invention relates to a length adjustable door lock, and in particular, to a door lock capable of changing the assembling length thereof to fit the specifications of the door. 
     Description of Related Arts 
     It should be noted that a door lock mainly has to be correspondingly and matchingly assembled in a door sheet. However, since the specifications and thickness of a door sheet may vary based on the actual needs, a door lock has to have the structure that matches door sheets of different specifications at the same time so as to enhance the serviceability of the door lock. More specifically, the structure of a door lock has to allow length adjustment thereof so as for being utilized in door sheets of different thickness. For instance, conventional technologies, such as Taiwan Pat. App. Nos. 83209999, 093205187, 83216250, and 86209818, disclosed relative structures for adjusting the length of a door lock. Unfortunately, those disclosed structures are difficult and complicated in not only manufacturing, but also in assembling. Hence, there are still drawbacks for locks for door that are length adjustable regarding complicated structure, difficult assembling, and etc. 
     SUMMARY OF THE PRESENT INVENTION 
     Hence, an object of the present invention is to provide a length adjustable door lock that is easy to be assembled. 
     Accordingly, the present invention provides a length adjustable door lock, which include a latch assembly, a lock core connected with the latch assembly, a lock bolt connected with the lock core, and a housing sleeved on the lock bolt, wherein the latch assembly has a latch assembly shell, wherein the latch assembly shell has an assembling opening, adapted for assembling the lock core, and an embedding opening arranged on a side of the assembling opening arranged thereon, wherein the embedding opening has a first embedding portion, a second embedding portion parallel to the first embedding portion, and a communicating portion communicated with the first embedding portion and the second embedding portion provided thereon, wherein the lock core has a joint, adapted for assembled in the assembling opening, wherein the joint has a first embedding slot, a second embedding slot, and a communicating slot arranged thereon correspondingly matching with the first embedding portion, the second embedding portion, and the communicating portion respectively, wherein the lock bolt has a bolt portion and a buckling portion extended from the bolt portion, wherein the buckling portion has a first buckling rib and a connecting rib arranged thereon, wherein the first buckling rib and the connecting rib are adapted for being inserted and embedded into the first embedding slot and the communicating slot through the first embedding portion and the communicating portion respectively, wherein the first buckling rib is adapted for being inserted and embedded into the second embedding slot through the second embedding portion alternatively, wherein the housing has a sleeve sleeved on the outer side of the bolt portion, wherein the bolt portion is allowed to slide relatively with the sleeve. 
     When the door lock is to be assembled on a door of different specifications, the length of the door lock may be correspondingly adjusted. It only has to have the first buckling rib be correspondingly assembled in the second embedding slot; the length of the door lock can be changed easily. Because the linking and connecting structures between the lock core and the lock bolt of the door lock are relatively simple. Whether the length of the door lock has to be adjusted, the assembling operations of the lock are both easy and convenient. 
     Still further objects and advantages will become apparent from a consideration of the ensuing description and drawings. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG.  1    is a perspective view of a length adjustable door lock according to a preferred embodiment of the present invention. 
         FIG.  2    is an exploded view of the length adjustable door lock according to the above preferred embodiment of the present invention. 
         FIG.  3    is a partially sectional side view of the length adjustable door lock according to the above preferred embodiment of the present invention. 
         FIG.  4    is a partially sectional side view of the length adjustable door lock changing length thereof according to the above preferred embodiment of the present invention. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
     The following description is disclosed to enable any person skilled in the art to make and use the present invention. Preferred embodiments are provided in the following description only as examples and modifications will be apparent to those skilled in the art. The general principles defined in the following description would be applied to other embodiments, alternatives, modifications, equivalents, and applications without departing from the spirit and scope of the present invention. 
     Referring to  FIGS.  1 - 3   , a length adjustable door lock  1  according to a preferred embodiment of the present invention comprises a latch assembly  2 , a lock core  3  connected with the latch assembly  2 , a lock bolt  4  connected with the lock core  3 , and a housing  5  sleeved on the outside of the lock bolt  4 . The latch assembly  2  has a latch assembly shell  21  and a conventional internal configuration configured in the latch assembly shell  21 . The internal configuration arranged in the latch assembly shell  21  are not the new features of the present invention, which details would therefore not be further introduced here. The latch assembly shell  21  forms an assembling opening  211  adapted for assembling the lock core  3  and an embedding opening  212  arranged on a side of the assembling opening  211  and communicated with the assembling opening  211 . The embedding opening  212  further has a first embedding portion  213 , a second embedding portion  214  parallel to the first embedding portion  213 , and a communicating portion  215  communicated with the first embedding portion  213  and the second embedding portion  214  provided thereon. The communicating portion  215  is arranged between the first embedding portion  213  and the second embedding portion  214  so as to form the embedding opening  212  an “H” shape in an overall manner. The lock core  3  has a joint  31  adapted for being assembled in the assembling opening  211  and a gear rack  32  extended from the joint  31 . The joint  31  has a first embedding slot  311 , a second embedding slot  312 , and a communicating slot  313  arranged thereon correspondingly matching with the first embedding portion  213 , the second embedding portion  214 , and the communicating portion  215  respectively. The gear rack  32  is adapted for being inserted into the latch assembly shell  21  to be connected and linked with other mechanisms of the latch assembly  2 . The lock bolt  4  has a bolt portion  41  and a buckling portion  42  extended from the bolt portion  41 . The buckling portion  42  has a first buckling rib  421 , a second buckling rib  422 , and a connecting rib  423  arranged thereon. The first buckling rib  421 , the second buckling rib  422 , and the connecting rib  423  are adapted for being inserted and embedded into the first embedding slot  311 , the second embedding slot  312 , and the communicating slot  313  through the first embedding portion  213 , the second embedding portion  214 , and the communicating portion  215  respectively. The first buckling rib  421  may also be inserted and embedded into the second embedding slot  312  through the second embedding portion  214 . The housing  5  has a slab  51 , a sleeve  52  extended from the slab  51 , and a baffle  53  protrudingly extended from the sleeve  52 . The slab  51  is adapted for being assembled on a door (not shown in the figures). The sleeve  52  is sleeved on the outer side of the bolt portion  41  and allows the bolt portion  41  to slide relatively with the sleeve  52 . The shape of the baffle  53  matches the embedding opening  212  and is adapted for covering and blocking the embedding opening  212 . 
     When assembling, the joint  31  of the lock core  3  should be firstly assembled in the assembling opening  211  of the latch assembly shell  21 . The side of the first embedding slot  311 , the communicating slot  313 , and the second embedding slot  312  faces the first embedding portion  213 , the communicating portion  215 , and the second embedding portion  214  of the embedding opening  212  correspondingly. Then, the bolt portion  41  of the lock bolt  4  should be inserted and arranged into the sleeve  52 , wherein the buckling portion  42  and the baffle  53  shall be correspondingly overlapped. Finally, the buckling portion  42  should be assembled into the joint  31  from a side direction of the embedding opening  212 . Here, the first buckling rib  421 , the connecting rib  423 , and the second buckling rib  422  are respectively and correspondingly in the first embedding slot  311 , the communicating slot  313 , and the second embedding slot  312 . Meanwhile, the baffle  53  is also embedded in the embedding opening  212 . Hence, the assembling of the parts is finished. Here, when the latch assembly  2  is in the process of locking or unlocking, the lock core  3  will be driven to linkingly move the lock bolt  4  axially relatively to the housing  5 . 
     When the door lock  1  is to be assembled on a door of different specifications, the length of the length adjustable door lock  1  may be correspondingly adjusted. Referring to  FIG.  4   , the first buckling rib  421  of the buckling portion  42  may be correspondingly assembled in the second embedding slot  312  so as to change the length of the door lock  1  easily. Therefore, the linking and connecting structures between the lock core  3  and the lock bolt  4  of the door lock  1  are relatively simple. Whether the length of the door lock  1  has to be adjusted, the assembling operations of the lock are both easy and convenient. 
     One skilled in the art will understand that the embodiment of the present invention as shown in the drawings and described above is exemplary only and not intended to be limiting. 
     It will thus be seen that the objects of the present invention have been fully and effectively accomplished. The embodiments have been shown and described for the purposes of illustrating the functional and structural principles of the present invention and is subject to change without departure from such principles. Therefore, this invention includes all modifications encompassed within the spirit and scope of the following claims.