Shoes with roller device

Abstract

There is provided a shoe with a roller device suitable for use in walking as an ordinary shoe and for use in skating as an in-line roller skate, and comprising a body including a body part to receive the foot of a user and an sole integrally formed with the bottom of the body part and having a receiving groove in the vertical direction, a roller device including a housing placed inside the sole, a stopper provided in the housing to movably reciprocate back and forth, a first wheel assembly movably fixed to the front of the housing and fixed to maintain the state for use in the ordinary shoe or for use in the in-line skate by the stopper, and a second wheel assembly provided on the back of the housing, movably fixed in the direction confronting with the moving direction of the first wheel assembly, and fixed to maintain the state for use in the ordinary shoe or for use in the in-line skate by the stopper, and a switch provided on the side of the sole of the body with engaged with the stopper to control the movement of the stopper of the roller device.

What is claimed is:  
     
         1 . A shoe with a roller device comprising: 
 a main body including a body part to receive a foot of a user and a sole integrally formed with a bottom of the body part and having a receiving groove in a vertical direction;    the roller device including a housing, with a front and a back, placed inside the sole, a stopper provided in the housing to movably reciprocate back and forth, a first wheel assembly movably fixed to the front of the housing and fixed to maintain a state for use in an ordinary shoe or for use in an in-line skate by the stopper, and a second wheel assembly provided on the back of the housing, movably fixed in a direction confronting with a moving direction of the first wheel assembly, and fixed to maintain the state for use in the ordinary shoe or for use in the in-line skate by the stopper; and    a manipulating means for controlling movement of the stopper of the roller device.    
     
     
         2 . The shoe of  claim 1 , wherein the housing of the roller device is formed as a three dimensional rectangular shape with an open bottom, and has a plurality of installation holes that penetrate both sides of the housing mutually symmetrically to movably fix each wheel assembly, and has an installation hole on one side of the housing on which manipulating means is installed with connected.  
     
     
         3 . The shoe of  claim 2 , wherein the housing has a reinforcing member, both ends of which are integrally fixed to inner both sides of the housing.  
     
     
         4 . The shoe of  claim 1 , wherein a fixing plate is integrally formed on a lower side of both ends of the stopper of the roller device with selective contact with the wheel assembly.  
     
     
         5 . The shoe of  claim 1 , wherein a folding part having a plurality of grooves is provided at a center of the stopper with the grooves uniformly distanced away from each other to be driven along with the manipulating means.  
     
     
         6 . The shoe of  claim 1 , wherein the housing and the stopper are elastically connected to each other by an elastic spring.  
     
     
         7 . The shoe of  claim 1 , wherein the first wheel assembly of the roller device comprises: a first link having a rotatably fixed wheel; a fixing rod for movably fixing the first link to the housing; a second link having a rotatably fixed wheel and movably fixed to the housing; and a guide for connecting the first link and the second link to operate in combination with each other.  
     
     
         8 . The shoe of  claim 7 , wherein a coil spring is installed on an end of the fixing rod so that the fixing rod is elastically fixed to the housing.  
     
     
         9 . The shoe of  claim 7 , wherein an upper side of the first link comprises a first contact part contacted with a fixing plate provided on a front end of the stopper when used as the ordinary shoe, and a second contact part contacted with the fixing plate of the stopper when the wheel assembly is protruded to be used as the in-line skate.  
     
     
         10 . The shoe of  claim 7 , wherein one upper side of the second link comprises a contact part contacted with one fixing piece provided on the front end of the stopper when used as the ordinary shoe.  
     
     
         11 . The shoe of  claim 1 , wherein the second wheel assembly of the roller device comprises a first link having a rotatably fixed wheel, a fixing rod to movably fix the first link to the housing, a second link having a rotatably fixed wheel and movably fixed to the housing, and a guide to connect the first link and the second link to be mutually driven by a linkage basis.  
     
     
         12 . The shoe of  claim 11 , wherein an end of the fixing rod has a coil spring installed so that the fixing rod is elastically fixed to the housing.  
     
     
         13 . The shoe of  claim 11 , wherein an upper side of the first link comprises a first contact part contacted with a fixing plate provided on a front end of the stopper when used as ordinary shoe, and a second contact part in contact with the fixing plate of the stopper when the first and second wheel assemblies protrude to be used as the in-line skate.  
     
     
         14 . The shoe of  claim 11 , wherein one upper side of the second link comprises a contact part contacted with one fixing piece provided on a front side of the stopper when used as ordinary shoe.  
     
     
         15 . The shoe of  claim 1 , wherein the manipulating means comprises a switch comprised of a handle to be held and turned by a user, and a load inserted into an installation hole provided on one side of the housing, one end of which is fixed to the handle by a bolt, and another end of which has a gear fit to each groove provided on a folding part of the stopper.  
     
     
         16 . The shoe of  claim 1 , further comprising a linkage device to drive to move a second link of the first wheel assembly and a second link of the second wheel assembly on a simultaneous and corresponding basis.  
     
     
         17 . The shoe of  claim 16 , wherein the linkage device comprises a first wire, one end of which is fixed generally at a center of the second link of the first wheel assembly, and another end of which is fixed to an upper side of the second link of the second wheel assembly; and a second wire, one end of which is fixed to an upper side of the second link of the first wheel assembly, and another end of which is fixed generally at a center of the second link of the second wheel assembly.  
     
     
         18 . The shoe of  claim 1 , further comprising a brake detachably installed in the body part to reduce speed or to stop when used as the in-line skate.  
     
     
         19 . The shoe of  claim 18 , wherein the brake comprises a body having a support groove in contact with a back end of the sole of the main body, a fixing member provided on front of the support groove of the body and inserted between the back of the housing and a second link of the second wheel assembly connectively contacted, a protrusion piece provided on front of both sides of the fixing member to prevent a right and left shake, and a stopper detachably provided on the body and generating a stopping force by abrasion from ground contact.  
     
     
         20 . The shoe of  claim 1 , wherein the manipulating means comprises a button integrally formed on back of the stopper with protrusion, and being able to reciprocate through an opening of the back of the housing.