BACKGROUND OF THE INVENTION 
       [0001]    (1) Field of the Invention 
         [0002]    The invention relates to a shoe, and more particularly to an integral shoe with the roller function. 
         [0003]    (2) Description of the Prior Art 
         [0004]    A shoe is manufactured by adhering a sole and an upper, which are individually manufactured, together with an adhesive agent, or by sewing the sole and the upper at the corresponding contact surfaces so that the sole and the upper are combined together to form the shoe. A skate shoe is also manufactured in the same manner except that a roller assembly has to be mounted on the sole of the skate shoe. 
         [0005]    However, this manufacturing method adopts the adhesive agent, which has the material aging problem, so that the upper and the sole tend to be separated. In addition, the used adhesive agent causes the air pollution, which becomes a great loading on the environment protection issue. Also, the workers who work in the workshop where the adhesive agent is placed always breathe the odor of the adhesive agent so that the health of the workers tends to be influenced. Thus, it is an important subject to improve these problems in the shoe manufacturing industry. 
       SUMMARY OF THE INVENTION 
       [0006]    In view of the above-mentioned problems, it is therefore an object of the invention to provide an integral shoe with a roller assembly, wherein the shoe is integrally formed, and the roller assembly is mounted on a sole of the shoe to possess the function of the skate shoe and to avoid the consideration induced by adhering an upper and the sole together. 
         [0007]    To achieve the above-identified object, the invention provides an integral shoe having an upper and a sole, which is characterized in that: the upper and the sole are integrally formed, the sole is formed with one concave cavity or a plurality of concave cavities, in which one roller assembly or roller assemblies are mounted, wherein the roller assembly has a rotatable roller. 
         [0008]    Therefore, the invention has the following advantages according to the technological means of the invention. 
         [0009]    First, the upper and the sole of the shoe are integrally formed so that the cost of the adhesive agent can be saved and the environmental pollution caused by the adhesive agent can be avoided. In addition, the upper and the sole cannot be easily separated from each other. 
         [0010]    Second, the integral shoe of the invention has the novel structure and function. Because the shoe is integrally formed, the sole is formed with the cavity so that the roller assembly can be mounted therein. There are many types of the roller assemblies, or even the roller base of the roller assembly can be inserted into the cavity so that the exterior is beautiful and the roller assembly can be replaced in a novel and fun manner. 
         [0011]    Further aspects, objects, and desirable features of the invention will be better understood from the detailed description and drawings that follow in which various embodiments of the disclosed invention are illustrated by way of examples. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0012]      FIG. 1  is a pictorially exploded view showing an integral shoe according to a first embodiment of the invention. 
           [0013]      FIG. 2  is a cross-sectional view showing the integral shoe according to the first embodiment of the invention. 
           [0014]      FIG. 3  is a pictorially exploded view showing an integral shoe according to a second embodiment of the invention. 
           [0015]      FIG. 4  is a cross-sectional view showing an integral shoe according to a third embodiment of the invention. 
           [0016]      FIG. 5  is a pictorially exploded view showing an integral shoe according to a fourth embodiment of the invention. 
           [0017]      FIG. 6  is a cross-sectional view showing the assembled integral shoe according to the fourth embodiment of the invention. 
       
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
       [0018]    The invention provides an integral shoe with a roller assembly. In the preferred embodiment as shown in  FIG. 1 , a shoe  10  includes an upper  11 , a sole  12  and a roller assembly  20 , which is additionally combined. 
         [0019]    As shown in  FIGS. 1 and 2 , the upper  11  and the sole  12  of the shoe  10  are integrally formed, and no seam is formed between the upper  11  and the sole  12 . Concave non-circular cavities  13  are respectively formed on the sole  12  at positions close to the toe and the heel. A slot  131  for communicating the cavities  13  together is also formed on the sole  12 . The slot  131  and the cavities  13  have openings facing in a direction toward the bottom side of the sole  12 . 
         [0020]    The roller assembly  20  is correspondingly mounted in the cavities  13  and the slot  131 . The roller assembly  20  includes two roller bases  21  and a link  22  connecting the roller bases  21  together. The roller base  21  is formed with an inner slot  211  having an opening facing the opening of the cavity  13 . The outer profile of the roller base  21  corresponds to the cross-sectional area of the cavity  13  and the roller base  21  is slightly tightly pressed against the cavity  13  so that the roller bases  21  and the link  22  are arranged in the cavities  13  and the slot  131 . The sole  12  is made of a plastic material and has the elasticity. So, the roller base  21  and the link  22  cannot easily fall out after they are mounted into the cavity and the slot. One roller  23  is mounted in each of the roller bases  21 , and bearings are mounted at the center portion of the roller  23  so that a shaft  231  may be mounted in the bearings. Thus, when the roller  23  is mounted in the inner slot  211 , two ends of the shaft  231  are fixed to the inner sidewalls of the inner slot  211  so that the roller  23  may be rotated relatively to the shaft  231 . The radial surface of the roller  23  faces the side surface of the shoe  10 . 
         [0021]    Consequently, the roller assembly  20  is formed after the roller  23  is mounted on the roller base  21 , and can be fully inserted into the cavities  13  and the slot  131 , as shown in  FIG. 2 . One portion of the roller  23  protrudes from the sole  12 . Consequently, a user may wear the shoe  10  and then apply a force to the roller assembly  20  to make the roller  23  roll on the ground so that the shoe may serve as a skate shoe. 
         [0022]    Consequently, the shoe  10  of the invention has the upper  11  and the sole  12 , which are integrally formed. So, the upper  11  and the sole  12  need not to be adhered together by the adhesive agent so that the problem of the poor adhesive intensity of the adhesive agent and the problem of the environment protection can be avoided. That is, the shoe of the invention may be easily manufactured and satisfy the environment protection effect. 
         [0023]    In addition, the sole  12  has the cavities  13  and the slot  131  corresponding to the roller assembly  20  and the two rollers  23  thereof. Thus, the roller assembly  20  can be fully and directly inserted into the cavities  13  and the slot  131  in a simple and quick manner without any screwing element, which deteriorates the exterior of the shoe. In addition, different types or colors of roller assemblies  20  may be used according to the user&#39;s requirements so that the variations in the visual feeling and the novel feeling of the shoe can be added. Because the roller assembly  20  has the roller bases  21  and the link  22 , which are tightly pressed against the cavities  13  and the slot  131 , the roller assembly  20  can be forced out easily. 
         [0024]    As shown in  FIG. 3 , only one single cavity  13  is formed on a sole  12  of a shoe  101  at the heel position. Thus, a roller assembly  201  only includes one roller base  21  and one roller  23 , and the skate shoe with one single roller may be formed after the roller assembly  201  is inserted into the cavity  13 . 
         [0025]    As shown in  FIG. 4 , a currently popular crocs shoe  102  may also have two roller assemblies  201  of  FIG. 3  each having only one single roller. The roller assemblies  201  are mounted in the heel and toe regions. So, there are many types of the shoes suitable for the invention. 
         [0026]    As shown in  FIGS. 5 and 6 , a roller assembly  202  may be modified in many ways. That is, one cavity or two cavities  14  may be formed on a sole  12  of a shoe  103 , and notched slots  141  are formed on the opposite inner sidewalls of each cavity  14 . The roller assembly  202  has a shaft  241 , which is movably mounted to and penetrates through the center of a roller  24 . Thus, after the roller assembly  202  is mounted in the cavity  14 , two ends of the shaft  241  exposed out of the roller  24  are inserted into the notched slots  141  so that the roller  24  is partially accommodated in the cavity  14  and partially exposed out of the sole  12  and the simpler skate shoe can be formed. 
         [0027]    New characteristics and advantages of the invention covered by this document have been set forth in the foregoing description. It is to be expressly understood, however, that the drawings are for the purpose of illustration only and are not intended as a definition of the limits of the invention. Changes in methods, shapes, structures or devices may be made in details without exceeding the scope of the invention by those who are skilled in the art. The scope of the invention is, of course, defined in the language in which the appended claims are expressed.
An integral shoe with a roller assembly. The integral shoe has an upper and a sole, which are integrally formed. At least one cavity is formed on the sole so that the roller assembly can be mounted in the cavity. Thus, the shoe with the roller function is integrally formed more quickly, and the roller assembly may also be replaced so that multiple functions can be achieved.