Abstract:
A body structure of a hairdressing scissor includes two body portions pivotally connected with each other. Each of the body portions includes a handle and a knife edge. The handle has a first connection section extended from one end thereof and having a notch defined thereon. The knife edge has a convex second connection section extended from one end thereof and fitted to the notch. The handle can be firmly assembled with the knife edge when corresponding connection sections with fitted shapes are engaged together.

Description:
BACKGROUND OF THE INVENTION 
       [0001]    1. Field of the Invention 
         [0002]    The present invention in general relates to a hairdressing scissor, in particular, to a body structure of hairdressing scissor. 
         [0003]    2. Description of Prior Art 
         [0004]    When hairstyle designer is cutting hair, hairdressing scissor is one of the most necessary and important tools. Since designer takes a longtime to grip the hairdressing scissor and operate hair cutting, the factors related to the hairdressing scissor, such as weight and material, are very important substantially. However, the purpose of the knife edge of the hairdressing scissor is to cut hairs, so it is made of a better material. On the other hand, the handle is only to be held by the user to operate the hair cutting, so the chosen material of the handle can be different from that of knife edge, based upon the aforementioned considerations, such as, weight, material, cost and the gripping feel. 
         [0005]    As mentioned thereinbefore, based upon the considerations of cost-saving and gripping feel promotion, most hairdressing scissor  2  sold on the market includes a pair of body portions  20 , as shown in  FIG. 1 . As seen in this figure, via a screwing element  23  (e.g., screw), a handle  21  and a knife edge  22 , originally separate, are firmly combined into one body portion  20 , two of which are then fitted pivotally into a hairdressing scissor via a pivoting element  24 . In so doing, the handle  21  and the knife edge  22  can be interchanged randomly, collocating the selected material or configuration habitually practiced by the designer. 
         [0006]    Additionally, there is a combined hairdressing scissor disclosed in Taiwan Patent No. 590063, in which except a screwing element  23 , a plurality of rivets and bores, corresponding to each other, are arranged on the connection sections of the handle  21  and the knife edge  22 , thus enhancing the firmly wedging force and making the structure of the body portion more secure. 
         [0007]    However, in the aforementioned structure, the connection force between the handle  21  and the knife edge  22  is enhanced by attached elements (e.g., the screwing element  23  and rivet), substantially needing an additional cost in a certain degree. Furthermore, during dismantling process, the screwing element  23  is easily lost or dropped off, while the rivet has a certain inconvenience as well. 
         [0008]    Moreover, two body portions  20  of the hairdressing scissor  2  are pivoted by the pivoting element  24  to be able to undergo corresponding closing-and-opening motion. But, in so doing, the pivoting element  24  is then exposed to the outside of two body portions  20 , further making the hairdressing scissor  2  has a specific limitation in terms of aesthetic design. Furthermore, it also can cause inconvenience for using the hairdressing scissor  2 . 
         [0009]    Therefore, how to achieve a connection of two body portions of the hairdressing scissors with most perfect posture then becomes a very important issue intended to be addressed by the relative industry. 
         [0010]    Accordingly, after a substantially devoted study, in cooperation with the application of relative academic principles, the inventor has finally proposed the present invention that is designed reasonably to possess the capability to improve the drawbacks of the prior art significantly. 
       SUMMARY OF THE INVENTION 
       [0011]    The invention is mainly to provide a body structure of a hairdressing scissor, which can make the handle and the knife edge be connected more firmly without dropping off easily, in the meantime, making the fitted body portion capable of a securer structure. 
         [0012]    Secondly, the invention is to provide a body structure of a hairdressing scissor, which can hide the pivoting element of the hairdressing scissor via the connection structure of the body portion without exposure, further constituting a hairdressing scissor with pivoting elements hidden in double faces. 
         [0013]    Thirdly, the invention is that the handle has a first connection section extended from one end thereof and having a notch defined thereon, while the knife edge has a convex second connection section extended from one end thereof and fitted to the notch. 
         [0014]    Fourthly, the invention is that two corresponding through holes are respectively arranged at the second connection sections on the two knife edges that are fitted with two handles to form a hairdressing scissor, after the two knife edges are pivoted to each other via a pivoting element. 
         [0015]    Compared with the prior arts, the functions achieved by the present invention are as the following. The connection between the handle and the knife edge is achieved by two corresponding connection sections having specific configuration without using the screw or other connection element to assemble the body portion thereby having firmness and stability. Besides, after being pivoted, two knife edges are fitted with two handles to form a hairdressing scissor, wherein the pivoting elements are hidden. In so doing, the hairs of a customer won&#39;t be stuck during a hair-cutting process, further solving the regret of longtime. 
     
    
     
       BRIEF DESCRIPTION OF DRAWING 
         [0016]    The features of the invention believed to be novel are set forth with particularity in the appended claims. The invention itself, however, may be best understood by reference to the following detailed description of the invention, which describes a number of embodiments of the invention, taken in conjunction with the accompanying drawings, in which: 
           [0017]      FIG. 1  is a perspective view of a hairdressing scissors according to the prior arts; 
           [0018]      FIG. 2  is a perspective explosive view of a first embodiment according to the present invention; 
           [0019]      FIG. 3  is a perspective view of the first embodiment according to the present invention; 
           [0020]      FIG. 4  is a cross-sectional view of the first embodiment according to the present invention; 
           [0021]      FIG. 5  is a cross-sectional view of another embodiment according to the present invention; 
           [0022]      FIG. 6  is a cross-sectional view of a further embodiment according to the present invention; 
           [0023]      FIG. 7  is a perspective explosive view of a second embodiment according to the present invention; 
           [0024]      FIG. 8  is a perspective explosive view of a third embodiment according to the present invention; and, 
           [0025]      FIG. 9  is a perspective explosive view of a fourth embodiment according to the present invention. 
       
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
       [0026]    In cooperation with attached drawings, the technical contents and detailed description of the present invention are described thereinafter according to a number of preferable embodiments, not used to limit its executing scope. Any equivalent variation and modification made according to appended claims is all covered by the claims claimed by the present invention. 
         [0027]      FIG. 2  is a perspective explosive view of a first embodiment according to the present invention. As shown in this figure, a hairdressing scissor  3  is commonly comprised of two body portions  30  and a pivoting element  33 . The body portion  30  is formed by connecting a handle  31  and a knife edge  32 . According to the invention, a first connection section  310  is extended from one end of the handle  31  and arranged a dovetail notch  310   a  with a notch opening narrower than a notch bottom. A convex second connection section  320  is extended from one end of the knife edge  32 . A convex portion of the second connection section  320  is a dovetail seat  320   a  just corresponding to the dovetail notch  310   a , making the two connection sections  310 ,  320  capable of fitting to each other, thus that the handle  31  and the knife edge can be connected firmly to form the body portion  30 . 
         [0028]    Two through holes  311 ,  321 , corresponding to each other, are arranged respectively on the second connection sections  320  of two knife edges  32 . The pivoting element  33  can pass through two through holes  311  to pivot the two knife edges  32  together. According to the body structure mentioned thereinbefore, the pivoted knife edges  32  are inter-fitted with the two handles  31  to further form a hairdressing scissor  3 , as shown in  FIG. 3 . In so doing, the pivoting element  33  is hidden in the two body portions  30 , while still not influence the normally opening-and-closing motion of the hairdressing scissor  3 . 
         [0029]    Please refer to  FIG. 4  continuously, showing a cross-sectional view along a sectional line “ 5 - 5 ” in  FIG. 3 . As shown in this figure, when the first connection section  310  and the second connection section  320  are inter-fitted to each other, the dovetail notch  310   a  on the first connection section  310  can just accommodate the dovetail seat  320   a  on the second connection section  320 . Also, since the notch opening of the dovetail notch  310   a  is narrower than the notch bottom of the dovetail notch  310   a,  the dovetail seat  320   a  can be wedged therein without dropping off easily.  FIG. 5  is a cross-sectional view of another embodiment according to the present invention. As seen in  FIG. 5 , the positions of the two connection sections  310 ,  320  can be interchanged randomly; that is, the first connection section  310  can be arranged on the knife edge  32 , while the second connection section  320  can be arranged on the handle  31 . The interchange depends on the actual need, not limited specifically. 
         [0030]    In the embodiments mentioned above, the first connection section  310  is arranged a dovetail notch  310   a , an inner wall of which is extended from the notch bottom to the notch opening and inclined inwardly, while the second connection section  320  is arranged a dovetail seat  320   a , a configuration of which corresponds to that of the dovetail notch  310   a.  However, the invention is not limited to the configurations of dovetail notch and dovetail seat only.  FIG. 6  shows a cross-sectional view of a further embodiment of the invention. In this case, a first notch  310   b  is arranged on the first connection section  310 , and a separating portion  310   c  inwardly projected is arranged at the notch opening of the first notch  310   b,  making the notch opening of the first notch  310   b  narrower than the notch bottom of the first notch  310   b.  The shape of a convex portion  320   b  arranged on the second connection section  320  is corresponded to that of the first notch  310   b.  When the two connection sections  310 ,  320  are inter-fitted to each other, the convex portion  320   b  can be just placed in the first notch  310   b.  Since the shapes of the first notch  310   b  and the convex portion  320   b  are corresponded to each other, the first notch  310   b  and the convex portion  320   b  can be fitted firmly. 
         [0031]      FIG. 7  shows a perspective explosive view of a second embodiment of the invention. Along the dovetail notch  310   a  on the first connection section  310 , the handle  31  is arranged a convex block  312  at one side close to the handle  31 . At one side far away the knife edge  32 , the second connection section  320  is inwardly arranged a second notch  322 , a notch opening of which is narrower than the notch bottom thereof. In this case, the second notch  322  and the convex block  312  can also be a dovetail notch and a dovetail seat as well, however, not limited to these only. When the two connection sections  310 ,  320  are inter-fitted to each other, the convex block  312  can be just placed in the second notch  322 , further enhancing the wedging force between the first connection section  310  and the second connection section  320 , and making the handle  31  and the knife edge  32  be fitted more firmly. 
         [0032]      FIG. 8  shows a perspective explosive view of a third embodiment of the invention. When a user is using the hairdressing scissor of the invention with a violently using action or due to other reasons, a phenomenon of dropping off occurs, because the body structure of the invention is insufficient to use. Then, as shown in  FIG. 8 , a threaded hole  331  can be arranged on the second connection section  320 . In the meantime, a threaded trough  341 , corresponding to the threaded hole  331  and without penetrating the first connection section  310 , is arranged at an inner side of the first connection section  310 . In so doing, a screw element  34 , from inside to outside, can securely connect the first connection section  310  and the second connection section  320 . Not only is the connection structure of the body portion  30  more firmly, but also is the limit of the aesthetic design of the hairdressing scissor enhanced, without exposing the attached screw element  34  to the outside of the body portion  30 . 
         [0033]    The embodiment shown in  FIG. 8  can be further illustrated in  FIG. 9 , showing a perspective explosive view of a fourth embodiment of the invention. In this case, the screw element  34  in  FIG. 8  is replaced by a headless screw  35 , in a top portion of which a hexagonal recession hole is arranged. By this arrangement, the contacting area between the headless screw  35  and a surface of the second connection section  320  can be reduced, since the headless screw  35  is sunk into threaded hole  331  and screwed the threaded trough  341 , which further prevents the dropping off of the headless screw  35  or other causes. Thereby, the probability influencing the closing-and-opening motion of the hairdressing scissor  3  can be reduced. 
         [0034]    Accordingly, through the constitution of aforementioned assemblies, a body structure of a hairdressing scissors according to the invention is thus obtained. 
         [0035]    Summarizing aforementioned description, the body structure according to the invention is an indispensably design for a hairdressing scissor indeed, which may positively reach the expected usage objective for solving the drawbacks of the prior arts, and which extremely possesses the innovation and progressiveness to completely fulfill the applying merits of new type patent, according to which the invention is thereby applied. Please examine the application carefully and grant it as a formal patent for protecting the rights of the inventor. 
         [0036]    However, the aforementioned description is only a preferable embodiment according to the present invention, not used to limit the patent scope of the invention, so equivalently structural variation made to the contents of the present invention, for example, description and drawings, is all covered by the claims claimed thereinafter.