Patent Publication Number: US-2003222424-A1

Title: Bicycle capable of being folded twice for storage and carrying

Description:
FIELD OF THE INVENTION  
       [0001] The present invention relates to bicycles, and particularly to a bicycle capable of being folded twice for storage and carrying, wherein the body of the bicycle can be folded twice for reducing the volume so that it can be storage and carried out conveniently.  
       BACKGROUND OF THE INVENTION  
       [0002] Currently, bicycles have become popular tools both in exercising and traveling. It is frequently occurred that the bicycle must be carried by the user or placed in the car storage box. Thereby, the bicycle must have a compact outlook and is foldable for being stored easily. Alternatively, commercial foldable bicycles are developed for many years, while these prior arts are only folded once so that the handle and cushion of the bicycles can not be hidden and thus the frame body can be not effectively reduced. Moreover, the frame body is still too large to be reduced to a required volume.  
       SUMMARY OF THE INVENTION  
       [0003] Accordingly, the primary object of the present invention is to provide a bicycle capable of being folded twice for storage and carrying, wherein the body of the bicycle can be folded twice for reducing the volume so that it can be storage conveniently.  
       [0004] To achieve above objects, the present invention provides a bicycle capable of being folded twice for storage and carrying comprising a frame body, a chain driving unit, a control unit, and a cushion unit.  
       [0005] One end of the frame body with respect to the control unit is formed with a pivotal hole and an opening hole. The pivotal hole serves for being installed by a locking screw. The opening hole serves for being installed by the quick-detaching screw. The locking screw serves to pivotally lock the frame body with the telescopic rod so that the frame body and the telescopic rod are fixed and pivotally connected with one another. The quick-detaching screw serves to separably and pivotally engage the frame body with the telescopic rod. Thereby, the control unit can be bent with respect to the frame body through an angle.  
       [0006] The cushion unit is formed by a cushion body and a cushion rod. The cushion rod is a telescopic and foldable rod. One end of the cushion rod with respect to the frame body is installed with a second locking screw and a second quick-detaching screw. One end of the frame body with respect to the cushion rod has a second pivotal hole and a second opening hole. The second pivotal hole is inserted by the second locking screw so as to pivotally lock the frame body and the cushion rod. The second opening hole is inserted by the second quick-detaching screw so as to separably and pivotally engage the frame body and the cushion rod. Thereby, the cushion unit can be bent with respect to the frame body through an angle.  
       [0007] The various objects and advantages of the present invention will be more readily understood from the following detailed description when read in conjunction with the appended drawing. 
     
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
     [0008]FIG. 1 is an assembly schematic view of the present invention.  
     [0009]FIG. 2 is an assembled cross sectional view of the present invention.  
     [0010]FIG. 3 shows the operation of folding the bicycle according to the present invention.  
     [0011]FIG. 4 is a schematic view showing the appearance of the present invention after it is folded.  
     [0012]FIG. 5 is another schematic view showing the appearance of the present invention after it is folded. 
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS  
     [0013] Referring to FIGS. 1 and 2, the bicycle capable of being folded twice for storage and carrying according to the present invention is illustrated. The bicycle of the present invention mainly comprises a frame body  10 , a chain driving unit  20 , a control unit  30 , and a cushion unit  40 .  
     [0014] The frame body  10  is a long plate and has a front wheel  51 , a rear wheel  52 , pedals  53  etc.  
     [0015] The chain driving unit includes a driving gear  21  and a chain  22  for generating power for moving forwards.  
     [0016] The control unit  30  has a telescopic rod  31  and two handles  32 . The upper section of the telescopic rod  31  is installed with a transversal tube  33  and two positioning bodies  34 , and a lower end thereof is installed with a locking screw  35  and a quick-detaching screw  36 . The two handles  32  have respective position buttons  37  at predetermined positions. The inner surface of each position button  37  is resisted by an elastomer  38 . Thereby, the position buttons  37  can be pressed elastically. The two handles  32  are installed in the two ends of the transversal tube  33 . An elastic strip passes through the transversal tube  33 . Two positioning via holes  331  with sizes slightly larger than the position buttons  37  are formed on the predetermined positions of the transversal tube  33 . The two position buttons  37  are buckled in the positioning via holes  331  and thus are positioned therein. When the position button  37  is pressed, the handle  32  may separate with the transversal tube  33  so as to achieve the goal of the folding and storage referring to FIGS. 2 and 3).  
     [0017] Moreover, one end of the frame body  10  with respect to the control unit  30  is formed with a pivotal hole  11  and an opening hole  12 . The pivotal hole  11  has a sealed structure for being inserted by the locking screw  35 . The opening hole  15  has an opening structure for being inserted by the quick-detaching screw  36 . The locking screw  35  serves to pivotally lock the frame body  10  to the telescopic rod  31  by a fixing way. The quick-detaching screw  36  serves to separably and pivotally engage the frame body  10  with the telescopic rod  31 . Thereby, the control unit  30  can be bent with respect to the frame body  10  through an angle (referring to FIG. 4).  
     [0018] The cushion unit  40  is formed by a cushion body  41  and a cushion rod  42 . The cushion rod  32  is a telescopic and foldable rod. The end of the cushion rod  32  with respect to the frame body  10  is installed with a second locking screw  43  and a second quick-detaching screw  44 . The end of the frame body  10  with respect to the cushion rod  32  has a second pivotal hole  13  and a second opening hole  14 . The second pivotal hole  13  serves for being installed by the second locking screw  43  so as to pivotally lock the frame body  10  to the cushion rod  42 . The second opening hole  14  serves to being inserted by the second quick-detaching screw  44  so as to separably and pivotally engage the frame body  10  with the cushion rod  42 . Thereby, the cushion unit  40  can be bent with respect to the frame body  10  through an angle (referring to FIGS. 4 and 5).  
     [0019] By above components, the present invention can be operated easily so that the telescopic rod  31 , handle body  32  and cushion rod  42  are folded quickly.  
     [0020] The present invention is thus described, it will be obvious that the same may be varied in many ways. Such variations are not to be regarded as a departure from the spirit and scope of the present invention, and all such modifications as would be obvious to one skilled in the art are intended to be included within the scope of the following claims.