Bicycle exercise apparatus

Abstract

Disclosed is a bicycle exercise apparatus. A bicycle exercise apparatus includes: a main frame on which a bicycle is positioned; a front support unit which is provided at one side of the main frame and on which a front wheel of the bicycle is rotatably seated; a rear support unit which includes a rotation support unit that has a central portion rotatably coupled to the other side of the main frame such that the rotation support unit maintains a horizontal state while rotating together with the main frame, and one or more rear rollers that are provided on the rotation support unit and rotated together with a rear wheel when the bicycle travels; and a rotation unit which supports the main frame and is rotatably coupled to a central portion of the main frame so as to adjust an inclination angle of the main frame.

1 . A bicycle exercise apparatus comprising:
 a main frame which is elongated and has a predetermined width and on which a bicycle is positioned;   a front support unit which is provided at one side in a longitudinal direction of the main frame and on which a front wheel of the bicycle is rotatably seated;   a rear support unit which includes a rotation support unit that has a predetermined length and a central portion in the longitudinal direction rotatably coupled to the other side in the longitudinal direction of the main frame such that the rotation support unit maintains a horizontal state while rotating together with the main frame in accordance with a rotation angle of the main frame, and one or more rear rollers that are provided on the rotation support unit, disposed in parallel with a front roller, and rotated together with a rear wheel when the bicycle travels; and   a rotation unit which supports the main frame such that the main frame is positioned at a predetermined height from a floor, and is rotatably coupled to a central portion of the main frame in the longitudinal direction so as to adjust an inclination angle of the main frame.   
     
     
         2 . The bicycle exercise apparatus of  claim 1 , wherein the front support unit is a treadmill including:
 a pair of frames which has a length in a traveling direction;   a deck which is positioned between the pair of frames and supports a load applied from above;   a pair of rollers which is disposed at front and rear sides of the deck, is installed between the pair of frames so as to be rotatable in the same direction, and has anti-slip grooves formed at predetermined intervals in a circumferential direction on outer circumferential surfaces of the pair of rollers; and   a belt which is installed to surround the pair of rollers and the deck from the outside, moves in accordance with a rotation of a driving roller, and has anti-slip protrusions formed corresponding to the anti-slip grooves on a surface that abuts against the pair of rollers.   
     
     
         3 . The bicycle exercise apparatus of  claim 2 , wherein a friction reducing member for reducing friction by minimizing a contact area with the belt is provided on an upper surface of the deck. 
     
     
         4 . The bicycle exercise apparatus of  claim 3 , wherein the friction reducing member includes:
 a ring-shaped support portion which is formed with a hollow portion; and   a spherical rotating portion which is positioned in the hollow portion of the support portion and rotated in conjunction with the movement of the belt in a state in which the spherical rotating portion is in contact with the belt.   
     
     
         5 . The bicycle exercise apparatus of  claim 2 , wherein the treadmill is mechanically connected to any one of the pair of rollers and adjusts tension of the belt by adjusting a distance between the pair of rollers. 
     
     
         6 . The bicycle exercise apparatus of  claim 5 , wherein the treadmill includes:
 a tension block to which a rotating shaft of any one of the pair of rollers is coupled and which is coupled to be movable in a front and rear direction with respect to the frame; and   a tension adjusting member which fastens the frame and the tension block and moves the tension block in the front and rear direction while rotating.   
     
     
         7 . The bicycle exercise apparatus of  claim 2 , wherein the treadmill further includes a drive motor which provides driving power to any one of the pair of rollers. 
     
     
         8 . The bicycle exercise apparatus of  claim 1 , wherein the rear rollers include a first rear roller and a second rear roller which are disposed at both ends in the longitudinal direction of the rotation support unit so as to be spaced apart from each other. 
     
     
         9 . The bicycle exercise apparatus of  claim 8 , wherein when an inclination angle of the main frame is changed such that the rear wheel is positioned at a position lower than the front wheel, at least one of the first rear roller and the second rear roller provides a load to the rotation of the rear wheel corresponding to the inclination angle of the main frame. 
     
     
         10 . The bicycle exercise apparatus of  claim 9 , wherein the second rear roller includes:
 a fixed shaft which is elongated in a width direction of the rotation support unit;   a cylindrical second rotary drum which has an outer surface with which the rear wheel is in contact, and is coupled to be rotatable about the fixed shaft; and   a load generating means which is provided in the second rotary drum, and selectively generates a load in accordance with the rotation of the second rotary drum corresponding to the inclination angle of the main frame.   
     
     
         11 . The bicycle exercise apparatus of  claim 10 , wherein the load generating means has a disc shape, is fixedly coupled to the second rotary drum, and has a central portion rotatably coupled to the fixed shaft. 
     
     
         12 . The bicycle exercise apparatus of  claim 10 , wherein when the main frame has an upward inclination and the inclination angle thereof is increased, the load generating means increases a load to be applied to the rotation of the second rotary drum. 
     
     
         13 . The bicycle exercise apparatus of  claim 9 , wherein when the main frame is rotated to be inclined forward and downward, the first rear roller rotates the rear wheel regardless of external force by a user. 
     
     
         14 . The bicycle exercise apparatus of  claim 13 , wherein the first rear roller includes:
 a cylindrical first rotary drum which has an outer surface with which the rear wheel is in contact, and is rotatably coupled to the rotation support unit;   a drive motor which is fixed to the rotation support unit in the first rotary drum and rotated; and   a gear means which is rotated by a first drive motor to rotate the first rotary drum, and allows the first rotary drum to rotate in one direction relative to the drive motor.   
     
     
         15 . The bicycle exercise apparatus of  claim 1 , wherein the front support unit includes the front roller which abuts against the front wheel and rotates together with the front wheel. 
     
     
         16 . The bicycle exercise apparatus of  claim 15 , wherein the plurality of front rollers is provided to be disposed to be spaced apart from one another in the longitudinal direction of the main frame. 
     
     
         17 . The bicycle exercise apparatus of  claim 15 , wherein the main frame further includes a power transmission unit which is connected to the front roller and the rear roller and transmits rotational force of the rear roller to the front roller to allow the front roller to rotate together with the rear roller when the rear wheel is operated by external force applied by the user. 
     
     
         18 . The bicycle exercise apparatus of  claim 17 , wherein the power transmission unit includes:
 a rear shaft which is provided on a rotation axis of the rotation support unit and the main frame, and has one side connected to any one of the first rear roller and the second rear roller by a separate transmission means such that the rear shaft is rotated together with the rear wheel when the rear wheel is rotated;   a front shaft which is provided on a rotation axis of the main frame and the front roller, and rotated together with the front roller; and   a circulation belt which is elongated, and has one side connected to the front shaft and the other side connected to the rear shaft, such that the circulation belt rotates the front shaft while circulating by the rotation of the rear shaft.   
     
     
         19 . The bicycle exercise apparatus of  claim 8 , wherein the rotation unit includes:
 a casing which is rotatably coupled to the central portion of the main frame in the longitudinal direction while having a main rotating shaft;   a drive motor which is provided in the casing and selectively rotates;   an arc portion which has an arc shape on the main frame, protrudes downward so that the main rotating shaft is positioned at a center of an arc, and has a rack gear that is formed on an inner surface of the arc so as to protrude in a direction toward the main rotating shaft; and   one or more gear units which are connected to the drive motor, and engaged with the rack gear to rotate the arc portion.   
     
     
         20 . The bicycle exercise apparatus of  claim 18 , wherein the arc portions are provided at both sides in a width direction of the main frame, respectively. 
     
     
         21 . The bicycle exercise apparatus of  claim 8 , wherein the main frame includes a plurality of unit links so that a part of the main frame in the longitudinal direction is selectively tilted. 
     
     
         22 . The bicycle exercise apparatus of  claim 8 , comprising:
 a guide unit which includes: a front frame which is positioned at a front side of the front wheel at one side in the longitudinal direction of the main frame and protrudes upward; a rear frame which is positioned at a rear side of the rear wheel at the other side in the longitudinal direction of the main frame and is elongated upward; and connecting wires which are elongated, are provided on the front frame and the rear frame, respectively, and each have one side detachably connected to a central portion of the bicycle in a width direction so as to support the bicycle so that the bicycle does not roll over.   
     
     
         23 . The bicycle exercise apparatus of  claim 22 , wherein the connecting wires are spaced apart from the floor at a predetermined height, and provided, at the same height, on the front frame and the rear frame, respectively. 
     
     
         24 . The bicycle exercise apparatus of  claim 22 , wherein the connecting wires are detachably and selectively coupled to the bicycle through separate coupling means provided at one side in the longitudinal direction. 
     
     
         25 . The bicycle exercise apparatus of  claim 22 , wherein the connecting wire includes a material having elasticity. 
     
     
         26 . The bicycle exercise apparatus of  claim 22 , wherein the guide unit further includes a safety frame which is elongated, has both ends coupled to the front frame and the rear frame, respectively, at a predetermined height, and is disposed to be eccentric toward one side in the width direction of the main frame.