Abstract:
A triple locking hook connector includes a hook, a locking bar, a first spring, a controlling shaft, and a second spring. The hook has an axle hole and a first groove on an end of a hook opening, and has a spacing portion on the other end of the hook opening. An edge of an end of the locking bar has a first bolt. The first spring is to drive a first bolt to keep at the first position and to drive the other end of the locking bar to remain in the spacing portion. The controlling shaft joins the axle hole via a main axle to restrict the first bolt in the first position and to be driven by a second spring to stay at the third position to ensure the locking bar shutting the hook opening.

Description:
NOTICE OF COPYRIGHT 
       [0001]    A portion of the disclosure of this patent document contains material which is subject to copyright protection. The copyright owner has no objection to any reproduction by anyone of the patent disclosure, as it appears in the United States Patent and Trademark Office patent files or records, but otherwise reserves all copyright rights whatsoever. 
       BACKGROUND OF THE PRESENT INVENTION 
       [0002]    1. Field of Invention 
         [0003]    The present invention provides a triple locking hook connector, in particular, a new technique that a hook hole can only be opened by sequentially operating a controlling shaft to release a locking bar, pulling the locking bar out of a spacing portion, and then forcing the locking bar to turn toward the hook hole. The concern of unhooking can be further reduced to the lowest with this whole new design. 
         [0004]    2. Description of Related Arts 
         [0005]    In rock climbing, mountain climbing, building construction, and the like contexts that require ascending and descending movements, safety of the personnel has to rely on the safety hooks and safety belts. 
         [0006]    According to the most advancing safety hook disclosure by U.S. Pat. No. 8,117,721, such conventional case, however, still has the following disadvantages to be improved. 
         [0007]    First, this prior case simply controls whether a locking bar can turn to open a hook hole via the operation on a controlling shaft, which structure still belongs to the scope of double locking hook connector and, therefore, has a misgiving of unhooking due to an unintended contact to the controlling shaft under operating circumstances of the complicated upper air. As a result, this prior case can hardly construct a completely secure protection. 
         [0008]    Second, when the locking bar of this prior case is under side bump, it can only simply transfer the bumping force to the hook, which easily converges the stress and causes a great restriction on the length of the locking bar, so the hook opening cannot correspondingly be enlarged. As a result, when a user is proceeding to hook or unhook, either action can be finished at once, which increases trouble with the operation. 
         [0009]    The present invention is invented for overcoming the abovementioned disadvantages of the conventional case after detailed and diligent research and development by the inventor of the present invention. 
       SUMMARY OF THE PRESENT INVENTION 
       [0010]    The present invention provides a triple locking hook connector which comprises: 
         [0011]    a hook comprising a hook hole penetrated thereof, wherein a side of the hook has a hook opening linking through the inside and outside of the hook hole, wherein the hook has a first groove, an axle hole penetratingly on an edge of an end of the hook opening, and a spacing portion on an edge of the other end of the hook opening; 
         [0012]    a locking bar having a first bolt on an edge of an end thereof, wherein the first bolt is able to move along the first groove and, in such manner, to shift between a first position and a second position, wherein as the first bolt moves to a first position, the other end of the locking bar will be positioned at the spacing portion to close the hook opening. As the first bolt moves to a second position, the other end of the locking bar can be positioned at a place out of the spacing portion; 
         [0013]    a first spring driving the first bolt to keep at the first position and to drive the other end of the locking bar to remain positioned in the spacing portion; 
         [0014]    a controlling shaft having a buckling portion and joining the axle hole via a main axle, which, as the controlling shaft is swung to a third position, allows the controlling shaft to restrict the first bolt at the first position; and 
         [0015]    a second spring to drive the controlling shaft to stay at the third position, so as to ensure that the locking bar shuts the hook opening, wherein for opening the hook opening, the controlling shaft will be driven to swing to a fourth position to allow the locking bar to be pulled to move the first bolt to the second position, which then induces the locking bar to turn toward the hook hole and composes a three-part mode for opening the hook opening. 
         [0016]    Accordingly, the three-part mode for opening the hook opening of the present invention is certainly able to further enhance the safety of use of the present invention, which is enough for dealing with the complicated operating circumstances of the upper air and reducing the concern of unhooking caused by unintended contact to the lowest. Besides, when the locking bar that is locking the hook opening is side bumped, the locking bar can pass the stress to the hook through the spacing portion and the first bolt, so the present invention really has an advancement of dispersing stress, which allows the present invention to enlarge the hook opening and lengthen the locking bar in the manner that the requirements for structural safety are also met, so that the operations of hooking and unhooking are made to be more smooth and efficient. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0017]      FIG. 1  is an explosive view of the present invention. 
           [0018]      FIG. 2  is a perspective view showing partially assembling a controlling shaft to a hook for the  FIG. 1 . 
           [0019]      FIG. 3  is an exterior view of the assembly of the present invention. 
           [0020]      FIG. 4  is a perspective view of a partial section of a locking bar of the assembly of the present invention. 
           [0021]      FIG. 5  is a perspective view of partial section of a locking bar and a controlling shaft of the assembly of the present invention. 
           [0022]      FIG. 6  is a perspective view of the first part operation of pressing a controlling shaft of the present invention. 
           [0023]      FIG. 7  is a perspective view of the second part operation of pulling a locking bar of the present invention. 
           [0024]      FIG. 8  is a perspective view of the third part operation of turning a locking bar to open a hook hole of the present invention. 
       
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
       [0025]    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. 
         [0026]    Please refer to  FIGS. 1 to 8 , the present invention comprises the following: 
         [0027]    A hook  10  comprises a thickness  10 C defined between a front side  10 A and a back side  10 B. A hook hole  11  penetrates the thickness  10 C, wherein a side of the hook  10  has a hook opening  110  linking through the inside and outside of the hook hole  11 . The hook  10  dentedly has a containing groove  12  penetrating the thickness  10 C on an edge of an end of the hook opening  110 . The hook  10  spacingly has an axle hole  14  and a first groove  13  penetrating the thickness  10 C on an edge of an end of the hook opening and has a first dowel  15 A and a second dowel  15 B respectively protruding from the two sides  10 A and  10 B in between the axle hole  14  and the first groove  13 . The first groove  13  is set a first position  131  near the hook opening  110  and a second position  132  away from the hook opening  110 . The front  10 A and the back  10 B of the hook  10  further symmetrically and dentedly has a second groove  16  connecting through the hook hole  11  in a manner that the second position  132  is referred as a center of circle. The bottom of the hook  10  further has a hanging hole  17  penetrating the thickness  10 C which is for wearing and engaging safety belt, wherein the two sides  10 A and  10 B of the hook  10  further dentedly respectively have a spacing portion  18  opposite to an edge of the other end of the hook opening  110  that is formed by a crossing buckling groove  181  and a guiding groove  182 . The buckling groove  181  axially matches the first groove  13 , while the guiding groove  182  connects the buckling groove  181  to the hook hole  11  in a slant direction. 
         [0028]    A locking bar  20  has a locking plate  21  for closing the hook opening  110 , wherein the front and back sides of the locking plate  21  further symmetrically and upwardly fold a side plate  22  respectively to form a sectional U-shaped frame. An edge of an end of each said side plate  22  has a first hole  221  connecting to the first groove  13 , so as to allow the first hole  221  and the first groove  13  to be passed through by a first bolt  23 , so that the locking bar  20  can linkingly move the first bolt  23  in between the first position  131  and the second position  132  along the first groove  13 . Free ends of the locking bar  20  on the two side plates  22  foldingly set a block  222  each opposite to each other, wherein when the first bolt  23  is at the first position  131 , the block is linked by the locking bar  20  to move via the guiding groove  182  and be positioned in the buckling groove  181  for letting the locking bar  20  lock the hook opening  110 , while when the first bolt  23  moves to the second position  132 , the locking bar  20  will linkingly move the block  222  in the guiding groove  182 , which causes the free end of the locking bar  20  to be under a position to release a spacing portion  18  to allow the locking bar  20  to swing toward the hook hole  11  along the guiding groove  182  to open the hook opening  110 . Each of the two side plate  22  further has a second hole  223  respectively for installing a second bolt  24 , wherein when the first bolt  23  is at the first position  131 , the second bolts  24  will be in the hook hole  11 , but when the first bolt  23  is at the second position  132 , the two second bolts will be at positions that are relatively capable of entering the second groove  16 . When the locking bar  20  swings toward the hook hole  11  in a manner that the second position  132  is referred as a center of circle, the second groove  16  is able to restrict the second bolts  24  for swinging around the second position  132 , so as to allow the locking bar  20  to stably open the hook opening  110  without a situation of bumping the wall of the hook hole  11 . The locking bar  20  further has an assembling groove  25  each on the locking plate  21  and the two side plate  22 , so the assembling groove  25  is able to allow the installation of a flipping portion  26  protruding from the locking plate  21 , wherein the flipping portion  26  is for the user to easily pull and turn the locking bar  20 . 
         [0029]    A first spring  30  circles the first bolt  23  and is extended a first pressure foot  31  flexibly propping on the first dowel  15 A and a second pressure foot  32  capable of pushing the locking plate  21  with a predetermined elasticity to allow the first spring  30  to be assembled in between the hook  10  and the locking bar  20  for driving the first bolt  23  to remain in the first position  131  and simultaneously driving the block  222  to remain in the buckling groove  181 . 
         [0030]    A controlling shaft  40  comprises an end plate  41  matching the thickness  10 C, wherein the front and back sides of the end plate  41  symmetrically fold a cover plate  42  respectively, so as to form a sectional U-shaped frame that the end plate  41  is at the outer side of the containing groove  12  and the two cover plates  42  correspondingly insert in between the two side plates  22  and the two sides  10 A and  10 B of the hook  10  respectively. The two cover plates  42  penetratingly have a third hole  43  in corresponding to the position of the axle hole  14 , so as to allow a main axle  44  to pass through and couple the axle hole  14  and the third hole  43  for the controlling shaft  40  to use the main axle  44  to be a center of circle to swing between a third position and a fourth position. The two cover plates  42  symmetrically have a buckling portion  45  of a heart-shaped groove, wherein when both ends of the first bolt  23  are inserted into the buckling portion  45  and when the controlling shaft  40  is at the third position, a hollow groove  451  of a side of the buckling portion  45  can be induced to restrict the first bolt  23  in the first position  131 , while when the controlling shaft  40  is at the fourth position, the hollow groove  451  of the buckling portion  45  can be induced to release the first bolt  23 , so that the first bolt  23  can move between the first position  131  and the second position  132  along the other side of the buckling portion  45 . 
         [0031]    A second spring  50  circles two rims of the axle hole  14  and being extended a third pressure foot  51  flexibly propping on the second dowel  15 B and a fourth pressure foot  52  capable of pushing the inner side of the end plate  41  with a predetermined elasticity to allow the second spring  50  to be assembled in between the hook  10  and the controlling shaft  50  for driving the controlling shaft  50  to remain in the third position, so as to ensure that the locking bar  20  really stays in the position where the hook opening  110  is locked thereby. 
         [0032]    Referring to  FIG. 6 , if one would like to operate the locking bar  20  to open the hook opening  110  of the present invention, the first part operation is to press on the controlling shaft  40  for driving the controlling shaft  40  to swing to the fourth position against the second spring  50 , which causes the buckling portion  45  to release the first bolt  23 . Referring to  FIG. 7 , the second part operation to the locking bar  20  is to let the locking bar  20  linkingly move the first bolt  23  to the second position  132  and the block  222  will move in the guiding groove  182 . Lastly, referring to  FIG. 8 , the third part operation is to force the locking bar  20  to overcome the predetermined elasticity from the first spring  30  to allow the locking bar  20  to turn counterclockwise toward the hook hole  11  to be out of the guiding groove  182 , so as to complete the three-part operation mode for opening the hook opening  110 . 
         [0033]    Hence, the present invention at least has the following progresses: 
         [0034]    First, the hook hole of the present invention can only be opened with the three-part operation of the controlling shaft  40  and the locking bar  20 , which can certainly further prevent the unhooking issue caused by unintended contact to the controlling shaft, and be applied to enhance the safety protection thereof. 
         [0035]    Second, when the locking bar  20  of the present invention is side bumped, an end of the locking bar  20  can pass part of the stress to the hook  10  through the spacing portion  23 , the other end of the locking bar  20  can pass part of the stress to the hook  10  through the block  222 , and the first spring  30  can also absorbs part of the stress, so the present invention really has an advancement of dispersing stress, so as to enlarge the hook opening  110  and lengthen the locking bar  20  in the manner that the requirements for structural safety are also met, so that the operations of hooking and unhooking are made to be more smooth and efficient. 
         [0036]    All in all, the overall structural characteristic of the present invention can be unprecedented in all current structures, which is also an excellent and outstanding design that similar invention or publish have both never been found in the same category. Therefore the present invention meets the application requirements of patent of an invention, and is lawfully submitted to apply for the patent accordingly. 
         [0037]    However, the above descriptions are only a preferred embodiment of the present invention, but not to be used to confine the scope of embodying the present invention, which means all equivalent varieties and modifications based on the appended claims of the present invention are within the scope of the present invention. 
         [0038]    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. 
         [0039]    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.