Patent Publication Number: US-8967023-B2

Title: Internal hexagonal wrench power assisting shank

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention generally relates to an internal hexagonal wrench power assisting shank. 
     2. Description of the Related Art 
     Currently, conventionally internal hexagonal wrenches are difficult to use. In some cases, internal hexagonal wrenches are injected into a handle shank. However, the foregoing manner is extremely restricted to an internal hexagonal wrench and may not be flexibly applied to different types, and furthermore the effect of the ratchet may not be taken as well. Another boring plastic shank on the market is taken as the power assisting shank for using the internal hexagonal wrench. However, the foregoing structure is merely an effect of a T-shaped handle shank without the effect of flexibly application generated by a straight handle shank, a ratchet or a F-type. 
     SUMMARY OF THE INVENTION 
     Therefore, to solve the problem existing in the conventional technique, it is an objective of the present invention to provide an internal hexagonal wrench power assisting shank capable of effectively overcoming the foregoing problem existing in the conventional technique. 
     To achieve the foregoing objective, the present invention provides an internal hexagonal wrench power assisting shank connected to a handle shank. The power assisting shank is disposed with several through holes capable of matching with an external diameter of the used wrench and a first gap. 
     The invention further comprises a rotary member. The rotary member is disposed with several through holes in which one end has the first gap. The rotary member is movably connected to a lodging member through a shaft at the same direction together with the through hole. A second gap is disposed on a first surface of the lodging member connected to one end of the rotary member having the gap. 
     A second surface of the lodging member has a connection hole, and a handle shank is connected by the connection hole. 
     The lodging member is η-shaped lodging member composed of the first surface, the second surface and a third surface, and the lodging member is movably connected to the rotary member through the first surface and the third surface. 
     The rotary member is a straight prism, and a direction of the through hole is parallel with a central axis of the straight prism. 
     The power assisting shank is a straight prism power assisting shank, and the through hole passes through the side surface of the straight prism power assisting shank and is parallel with its bottom surface, and the first gap is parallel with a side prism of the straight prism power assisting shank and passes through a bottom surface of the straight prism power assisting shank, and another bottom surface is disposed with a connection hole, and a handle shank is connected by the connection hole. 
     Since the foregoing technique manners are adopted, the internal hexagonal wrench power assisting shank of the invention is suitable for internal hexagonal wrenches with different types and can be connected to different kinds of handle shanks such as a straight handle shank, a ratchet, a an L-shaped handle shank to have convenience and flexibility. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The detailed structure, operating principle and effects of the present invention will now be described in more details hereinafter with reference to the accompanying drawings that show various embodiments of the invention as follows. 
         FIG. 1  is a structural diagram according to the present invention; 
         FIG. 2  is a first diagram of a structure of a lodging member according to the present invention; 
         FIG. 3  is a second diagram of a structure of a lodging member according to the present invention; 
         FIG. 4  is a first diagram of a structure of a rotary member according to the present invention; 
         FIG. 5  is a second diagram of a structure of a rotary member according to the present invention; 
         FIG. 6  is a structural diagram of a rotary member according to a first embodiment of the invention; 
         FIG. 7  is a structural diagram of a rotary member according to a second embodiment of the invention; 
         FIG. 8  is a structural diagram of a rotary member according to a third embodiment of the invention; 
         FIG. 9  is another structural diagram according to the invention; 
         FIG. 10  is a structural diagram according to another embodiment of the invention. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     The technical content of the present invention will become apparent by the detailed description of the following embodiments and the illustration of related drawings as follows. 
     With reference to  FIG. 1  and  FIG. 10  for an internal hexagonal wrench power assisting shank is connected to a handle shank. The handle shank is disposed with several through holes  7  capable of matching an external diameter of the used wrench and a first gap  6 . The internal hexagonal wrench power assisting shank can be selectively connected to different handle shanks, such as a T-shaped handle shank  9  or a ratchet handle shank, a straight handle shank  13 , an L-shaped handle shank  12 , based upon demands to satisfy different choices of customers. Further, the handle shank can be movably connected or fastened as a whole. 
     In an embodiment of the invention, the power assisting shank comprises a rotary member  2  as a straight prism. The rotary member is disposed with several through holes  7  in which one end has the first gap  6 . The sizes of the through holes  7  and the first gap  6  are matched with the external diameter of the internal hexagonal wrench  10 . The through hole  7  is along a central axis direction of the straight prism. The rotary member  2  is movably connected a lodging member  1  through a shaft  20  of passing through the central axis. The rotary member  2  can surround the shaft to rotate relative the lodging member  1 . 
     The lodging member  1  is a η-shaped lodging member  1  composed of a first surface  5 , a second surface  11  and a third surface  4 . The lodging member  1  is movably connected to the rotary member  2  through its first surface  5  and the third surface  4 . While in fastening, the first surface  5  is fastened with one end of the first gap  6  of the rotary member  2 . 
     The second surface  11  of the lodging member  1  is disposed with a connection hole  3 . The handle shank is connected by the connection hole  3 . 
     While in use, the through hole  7 , which matches with the hexagonal wrench  10 , of the rotary member  2  is rotated to a second gap  8  of the lodging member  1  to allow the short shank of the internal hexagonal wrench  10  passing through the through hole  7  of the rotary member  2 . Afterward, the rotary member  2  is rotated, and the first surface  5  is utilized to buckle the internal hexagonal wrench  10  to prevent sliding when the force is imposed. 
     Another embodiment of the invention is that the power assisting shank is a straight prism. The through hole  7  passes through the side surface of the power assisting shank having the straight prism and is parallel its bottom surface. The first gap  6  is parallel the side surface of the straight prism power assisting shank and passes through the bottom surface of the power assisting shank having the straight prism while another bottom surface is disposed with the connection hole  3 . While in use, a short end of the internal hexagonal wrench  10  passes through the through hole  7 . A longer end is lodged into the first gap  7  of a handle shank. The connection hole  3  can be connected to different handle shanks. The user may have multiple choices to increase the convenience. 
     While the means of specific embodiments in present invention has been described by reference drawings, numerous modifications and variations could be made thereto by those skilled in the art without departing from the scope and spirit of the invention set forth in the claims. The modifications and variations should also fall within the protection scope of the present invention.