Abstract:
A bending structure of a hand tool includes a grip part. A bottom rim of an end of the grip part is formed with an actuating slot having an actuating rod. Side walls of an actuating part have respectively a wall pushing the actuating rod away from the actuating slot and a notch receiving the actuating rod in the actuating slot. By the aforementioned structures, a swiveling head can rotate freely or be fixed at a specific position by toggling a knob.

Description:
BACKGROUND OF THE INVENTION 
       [0001]    a) Field of the Invention 
         [0002]    The present invention relates to a bending structure of a hand tool and more particularly to a bending structure of a hand tool which can allow a swiveling head to rotate freely and to be fixed at a specific position. 
         [0003]    b) Description of the Prior Art 
         [0004]    A machine is a foundation of manufacturing business, because production of all objects should use a machine. Whereas, a tool is a base of machine business and production of all machines requires using a tool. There are many kinds of tools according to purposes, functions and prices, and each tool is provided with a different function and purpose. 
         [0005]    The tool can be divided into an electric tool which uses electricity to produce power, a pneumatic tool which uses air as driving power or even a hand tool which uses man power. Among them, as using the most primitive man power, the hand tool is most popular and is used broadly. 
         [0006]    However, when the aforementioned hand tool is in use, following issues and shortcomings actually exist for improvement. 
         [0007]    As all kinds of hand tools are designed with various types of corresponding socket joints, such as a screw driver, an F-handle or a sleeve set; therefore, each hand tool is fitted with a corresponding socket joint. Yet, for the conventional hand tool, as an angle is fixed, there will be a spatial place not good for adjustment, which usually results in inconvenience. 
       SUMMARY OF THE INVENTION 
       [0008]    The primary object of the present invention is to provide a bending structure of a hand tool which can allow a swiveling head to rotate freely and to be fixed at a specific position. 
         [0009]    To achieve the aforementioned object, the present invention includes a grip part. A bottom rim of an end of the grip part is formed with an actuating slot, an interior of the actuating slot is slidingly provided with an actuating rod and an end of the actuating rod is formed with a teeth part; whereas, two sides of an end of the grip part are extended respectively with a pivoting part, each pivoting part is opened with a pivot hole in a direction perpendicular to the actuating slot, the pivot holes are pivoted with a swiveling head and a rear end of the swiveling head is formed with a teeth part which can be locked with the actuating rod. A side of the grip part is opened with a control slot, an interior of the control slot contains a knob, the knob includes a toggle part which can rotate the knob and an actuating part, side walls of the actuating part are formed respectively with a wall which can push the actuating rod away from the actuating slot, and a notch which can accommodate an rear end of the actuating rod to receive the actuating rod in the actuating slot. 
         [0010]    As the present invention includes the knob which includes the toggle part to rotate the knob and the actuating part, with the side walls of the actuating part being formed respectively with the wall to push the actuating rod away from the actuating slot and the notch to accommodate the rear end of the actuating rod that the actuating rod can be received in the actuating slot, a user can toggle the knob to rotate the swiveling head freely or to fix the swiveling head at a fixed position. When the swiveling head rotates freely, the actuating rod is accommodated in the notch of the actuating slot and the teeth part of the actuating rod is far away from the teeth part of the swiveling head; at this time, the swiveling head can rotate freely. On the other hand, when the swiveling head is fixed at a specific position, the wall of the actuating part pushes the actuating rod and the teeth part of the actuating rod is locked with the teeth part of the swiveling head; at this time, the swiveling head is fixed. 
         [0011]    To enable a further understanding of the said objectives and the technological methods of the invention herein, the brief description of the drawings below is followed by the detailed description of the preferred embodiments. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0012]      FIG. 1  shows a three-dimensional view of a preferred embodiment of the present invention. 
           [0013]      FIG. 2  shows a first three-dimensional exploded view of a preferred embodiment of the present invention. 
           [0014]      FIG. 2A  shows a second three-dimensional exploded view of a preferred embodiment of the present invention. 
           [0015]      FIG. 3  shows a cutaway view of a preferred embodiment of the present invention. 
           [0016]      FIG. 4  shows a first schematic view of an operation of a preferred embodiment of the present invention. 
           [0017]      FIG. 5  shows a second schematic view of an operation of a preferred embodiment of the present invention. 
           [0018]      FIG. 6  shows a third schematic view of an operation of a preferred embodiment of the present invention. 
           [0019]      FIG. 7  shows a schematic view of an implementation of another preferred embodiment of the present invention. 
           [0020]      FIG. 8  shows a schematic view of an implementation of still another embodiment of the present invention. 
       
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
       [0021]    Referring to  FIGS. 1 ,  2 ,  2 A and  3 , it shows a three-dimensional view, a first three-dimensional exploded view, a second three-dimensional exploded view and a cutaway view, of a preferred embodiment of the present invention. As shown in the drawing, the present invention comprises a grip part  1 , wherein a bottom rim of an end of the grip part  1  is formed with an actuating slot  11 , an interior of the actuating slot  11  is slidingly provided with an actuating rod  111  and an end of the actuating rod  111  is formed with a teeth part  112 ; two sides of an end of the grip part  1  are extended respectively with a pivoting part  12 , each pivoting part  12  is opened with a pivot hole  121  in a direction perpendicular to the actuating slot  11 , the pivot holes  121  are pivoted with a swiveling head  2  and a rear end of the swiveling head  2  is formed with a teeth part  21  which can be locked with the actuating rod  111 ; a side of the grip part  1  is opened with a control slot  13 , an interior of the control slot  13  is accommodated with a knob  131 , the knob  131  includes a toggle part  132  which can rotate the knob  131  and an actuating part  133 , side walls of the actuating part  133  are formed respectively with a wall  134  which can push the actuating rod  111  away from the actuating slot  111 , and a notch  135  which can accommodate the actuating rod  111 , allowing the actuating rod  111  to be received in the actuating slot  11 . 
         [0022]    In addition, an elastic element  113  is provided between the actuating rod  111  and the actuating part  133 , the swiveling head  2  is pivoted at the pivot holes  121  by a screw element  22 , the control slot  13  is opened with a locking groove  14  in a direction perpendicular to the inner wall  134 , an interior of the locking groove  14  is accommodated with a ball  141  which is abutted with an elastic element  142  and the actuating part  133  is formed with a latching groove  136  to accommodate the ball  141 . 
         [0023]    The control slot  13  is opened with a locking groove  15  in a direction perpendicular to the inner wall  134 , an interior of the locking groove  15  is accommodated with a ball  151  which is abutted with an elastic element  152 , and the actuating part  133  is formed with the latching groove  136  to accommodate the ball  151 . 
         [0024]    Referring to  FIGS. 2 ,  2 A,  4 ,  5  and  6  at a same time, it shows a first three-dimensional exploded view, a second three-dimensional exploded view, a first schematic view of an operation, a second schematic view of an operation and a third schematic view of an operation, of a preferred embodiment of the present invention. As shown in the drawings, the present invention includes the knob  131  which uses the ball  141  in the locking groove  14  to lock the knob  131  in the control slot  13 . Besides, the ball  141  in the locking groove  14  is also abutted with the elastic element  142 , allowing the knob  131  to be more effectively locked in the control slot  13 . Moreover, the actuating slot  11  of the present invention is provided with the actuating rod  111  and the end of the actuating rod  111  is formed with the teeth part  112  which can be locked with the swiveling head  2 ; therefore, when a user rotates the knob  131  to let the wall  134  of the knob  131  to push the actuating rod  111 , the teeth part  112  of the actuating rod  111  will be locked with the teeth part  21  of the swiveling head  2 . At this time, the swiveling head  2  can be fixed at a constant position. 
         [0025]    On the other hand, when the user rotates the knob  131  that the actuating rod  111  corresponds exactly to the notch  135  of the actuating part  133 , one end of the actuating rod  111  will be accommodated in the notch  135 , and at a same time, the teeth part  112  of the actuating rod  111  will be away from the teeth part  21  of the swiveling head  2 . At this time, the swiveling head  2  can rotate freely. 
         [0026]    Referring to  FIGS. 2 ,  2 A and  7  at a same time, it shows a first three-dimensional exploded view and a second three-dimensional exploded view of a preferred embodiment of the present invention, as well as a schematic view of an implementation of another preferred embodiment of the present invention. As shown in the drawings, the actuating part  133  of the present invention is formed with a ring groove  16 , the control slot  13  is surrounded by a collar  161  and the collar  161  can be locked into the ring groove  16 . By the aforementioned structures, the knob  131  is effectively fixed in the control slot  13  by locking the collar  161  with the ring groove  16 . 
         [0027]    Furthermore, the swiveling head  2  of the present invention can be any kind of hand tool (such as an F-handle, a screw driver set or a sleeve set). 
         [0028]    Referring to  FIGS. 2 ,  2 A and  8 , it shows a first three-dimensional exploded view and a second three-dimensional exploded view of a preferred embodiment of the present invention, as well as a schematic view of an implementation of still another preferred embodiment of the present invention, wherein the side wall of the grip part  1  of the present invention can be provided with a latch slot  17  into which is accommodated with a latch pin  171 , and the actuating part  133  is formed with a latching groove  136  which can accommodate the latch pin  171 . 
         [0029]    By the aforementioned structures, a solution is provided to lock the knob  131  in the control slot  13 , as well. 
         [0030]    Accordingly, referring to all the drawings, the present invention is actually provided with following advantages when compared with the prior art. 
         [0031]    The knob  131  of the present invention includes the toggle part  132  which can rotate the knob  131 , and the actuating part  133 ; wherein, the side walls of the actuating part  133  are formed respectively with the wall  134  which can push the actuating rod  111  away from the actuating slot  11 , and the notch  135  which can accommodate the actuating rod  111  that the actuating rod  111  can be received in the actuating slot  11 . Therefore, when the user toggles the knob  131  to fix the swiveling head  2  at a fixed position, he or she only needs to toggle the knob  131  to enable the wall  134  of the actuating part  133  to push the actuating rod  111 ; and when the teeth part  112  of the actuating rod  111  is locked with the teeth part  21  of the swiveling head  2 , the swiveling head  2  can be fixed. On the other hand, when the user toggles the knob  131  to rotate the swiveling head  2  freely, he or she only needs to toggle the knob  131 , enabling the notch  135  of the actuating part  133  to align with the actuating rod  111  that one end of the actuating rod  111  is accommodated in the notch  135 ; at this time, the teeth part  112  will be away from the teeth part  21  of the swiveling head  2 , and the user can rotate the swiveling head  2  freely to reach to a necessary position. 
         [0032]    It is of course to be understood that the embodiments described herein is merely illustrative of the principles of the invention and that a wide variety of modifications thereto may be effected by persons skilled in the art without departing from the spirit and scope of the invention as set forth in the following claims.